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UNU Programme on Food and Nutrition for Human and Social Development

Food and Nutrition Bulletin

Editor: Dr. Nevin S. Scrimshaw Assistant Editor: Ms. Edwina B. Murray Editorial Consultant: Ms. Sarah Jeffries

Associate Editors: Dr. Hernán Delgado, Director, Institute of Nutrition of Central America and Panama (INCAP), Carretera Roosevelt, Zona 1, Guatemala City, Guatemala
Dr. Peter Pellet, Professor, Department of Food Science and Nutrition, Chenoweth Laboratories, University of Massachusetts, Amherst, MA 01002, USA
Dr. Aree Valyasevi. Professor and Institute Consultant, Mahidol University at Salaya, Nakorn Chaisri, Nakorn Pathom 73170, Thailand

Programme Co-ordinating Office

Harvard Center for Population Studies 9 Bow St., Cambridge, MA 02138. USA Telephone: (617) 495-0417. Fax: (617) 495-5418 Telex: 92 1496. E-Mail: UNUCPO@HARVADA.BITNET Programme Director: Dr. Nevin S. Scrimshaw Associate Programme Director: Dr. Guillermo Herrera Programme Assistant: Ms. Edwina B. Murray Secretary: Ms. Sandy Lee

At the UNU Centre, Tokyo:

Training and Fellowship Officer: Dr. Abraham Besrat

Associated institutions

CENTRAL FOOD TECHNOLOGICAL RESEARCH INSTITUTE (CFTRI). Mysore 570013, India. Tel. 22298. Cable: UNVERCENT MYSORE. Telex: 0846-241 FTRI IN Co-ordinator: Dr. B. L. Amla

DEPARTMENT OF NUTRITION AND FOOD SCIENCE, UNIVERSITY OF GHANA (DNFS). P.O. Box 134, Legon, Ghana. Cable: UNIVERSITY LEGON. Co-ordinator: Dr. R. Orraca-Tetteh

FACULTY OF AGRICULTURE, UNIVERSITY OF IFE. Ile-lfe, Nigeria. Tel. 2290 to 2299. Co-ordinator: Dr. J. O. Adejuwon

INSTITUTE OF AGRICULTURAL CHEMISTRY AND FOOD TECHNOLOGY (IATA). Jaime Roig I 1, Valencia 10, Spain. Tel. 36908-00. Cable: IATA Valencia 10, Spain. Co-ordinator: Dr. Salvador Barber

INSTITUTE OF NUTRITION, MAHIDOL UNIVERSITY (INMU). Salaya Campus, c/o Research Centre, Faculty of Medicine, Ramathibodi Hospital, Rama VI Road. Bangkok 4, Thailand. Tel. 282-6435. Coordinator: Dr. Aree Valyasevi

INSTITUTE OF NUTRITION AND FOOD TECHNOLOGY (INTA). University of Chile, Casilla 15138, Santiago 11, Chile. Tel.

214105, 214030. Cable: INTA CHILE. Co-ordinator: Dr. José Riumallo

INSTITUTE OF NUTRITION OF CENTRAL AMERICAN AND PANAMA (INCAP). Carretera Roosevelt, Zona 11, Guatemala City, Guatemala. Tel. 43762. Cable: INCAP GUATEMALA. Co-ordinator: Dr. Hernán Delgado

THE INTERNATIONAL FOOD, NUTRITION, AND DEVELOPMENT PROGRAMME. Harvard Center for Population Studies, 9 Bow St., Cambridge, MA 02138, USA. Tel. (617) 495-0417. Fax: (617) 496-5418. Telex: 92 1496. E-Mail: UNUCPO@HARVADA.BITNET Co-ordinator: Dr. Nevin S. Scrimshaw

KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY (KAIST). P.O. Box 131, Cheongryang, Seoul, Republic of Korea. Tel. (967) 8801. Cable: KISTROK. Telex: KISTROK K 27380. Co-ordinator: Dr. Tai-Wan Kwon

LONDON SCHOOL OF HYGIENE AND TROPICAL MEDICINE (LSHTM). Keppel Street (Gower Street), London WC1E 7HT, UK. Tel. 01-636 8636. Co-ordinator: Dr. Philip Payne

NATIONAL FOOD RESEARCH INSTITUTE (NFRI). 2-1-2 Kannondai, Yatabe-machi, Tsukuba-gun, Ibaraki-ken 300-21, Japan. Tel. 02875-6-8011. Co-ordinator: Dr. Keiji Umeda

NETHERLANDS INTERNATIONAL NUTRITION INSTITUTE (NINI). Lawickse Allee 11, P.O. Box 88, 6700 AB, Waegningen, Netherlands. Tel. (08370) 19040. Co-ordinator: Dr. Joseph Hautvast

THE NUTRITION CENTER OF THE PHILIPPINES (NCP). Nutrition Center of the Philippines Bldg., South Super Highway, Nichols Interchange, Makati, Metro Manila 3116, Philippines. Tel. 85-30-71 to -79. Cable: NUTRICEN MANILA. Coordinator: Dr. Mercedes de Solon.

UNIVERSITY OF NAIROBI (UNK). Department of Food Technology and Nutrition, Faculty of Agriculture, Kabete Campus, P.O. Box 41670. Nairobi, Kenya. Co-ordinator: Dr. A. A. Kielmann

UNIVERSITY OF SAO PAULO (USP). School of Public Health, Avenida Dr. Arnaldo, 715. Sao Paulo. S.P., Brazil. Coordinator: Dr. Ruy Laurenti

UNIVERSITY OF THE WEST INDIES (UWI). St. Augustine Campus: Faculty of Agriculture, Department of Crop Science, St. Augustine, Trinidad. Tel. 662-7171. Cable: STOMATA PORT OF SPAIN. Resident Co-ordinator: Dr. Lloyd Rankine. Mona Campus: Tropical Metabolism Research Unit, Mona, Kingston 7, Jamaica. Tel. 927-6661. Cable: UNIVERS JAMAICA. Contact: Dr. Michael Golden

Other co-operating organizations

Through the British Council:

Agricultural Research Council, Food Research Institute, Norwich, UK

Department of Food Science, University of Reading, Reading, UK (Dr. Harry Nursten)

Institute of Development Studies, University of Sussex, Brighton, UK

London School of Hygiene and Tropical Medicine, London, UK

Tropical Development and Research Institute (TDRI), London, UK

Through CFTRI:

National Institute of Nutrition (NIN). Indian Council of Medical Research, Hyderabad, India (Dr. M. Mohanram)

Through IATA:

Instituto de Nutrición, Consejo Superior de Investigaciones Científicos de España, Madrid, Spain (Dr. Gregorio Varela)

Through IFNP:

Department of Anthropology, Nutrition, and Agriculture, University of Kentucky, Lexington, Ky., USA (Dr. Billie R. DeWalt)

Department of Food Science and Nutrition, University of Massachusetts, Amherst, Mass., USA (Dr. Peter Pellet)

Department of Nutrition, Cornell University, Ithaca, N.Y., USA (Dr. M. C. Nesheim)

Departments of Nutrition and Medical Anthropology, University of Connecticut, Storrs, Conn., USA (Dr. Gretel Pelto)

School of Public Health, Johns Hopkins University, Baltimore, Md., USA (Dr. Benjamin Caballero)

School of Public Health, University of California, Los Angeles, Calif., USA (Dr. Snehendu B. Kar)

Tufts University School of Nutrition, Medford, Mass. (Dr. Stanley N. Gershoff), and Division of Geographic Medicine, Department of Medicine, Tufts University School of Medicine, Boston, Mass., USA (Dr. Gerald T. Keusch)

Through INCAP:

Central American Institute of Corporation Management (INCAE), Costa Rica (Dr. John C. Ickis)

Instituto Centroamericano de Investigación y Tecnologia Industrial (ICAITI), Guatemala City, Guatemala (Dr. Carlos Rolz)

Through KAIST:

Korea University, Food Research Center, College of Agriculture, Seoul, Republic of Korea (Dr. Cherl-Ho Lee)

Korea University, Korea Nutrition Research Institute, Seoul, Republic of Korea (Dr. Jin Soon Ju)

Through NCP:

Food and Nutrition Research Institute, Manila, Philippines

University of the Philippines at Los Baños, Philippines (Dr. Rodolfo Florentino)

Through NFRI:

Tokyo University of Agriculture, Tokyo, Japan

Through NINI:

Department of Human Nutrition, Agricultural University, Wageningen, Netherlands (Dr. P. Middelburg)

Department of Tropical Nutrition, Royal Tropical Institute, Amsterdam, Netherlands (Prof. J. Kusin)

Division for Nutrition and Food Research, TNO, Zeist, Netherlands (Prof. B. Krol)

Food Research Institute, Norwich, UK (Dr. David Southgate)

International Course in Food Science and Nutrition (ICFSN), Wageningen, Netherlands (Dr. M. L. J. Mertens)

Netherlands Universities Foundation for International Cooperation (NUFFIC), The Hague, Netherlands (Dr. C. W. Klugkist)

Through USP:

State University of Campinas (UNICAMP). Campinas, Brazil

University of Sao Paulo, Ribeirao Prêto. Brazil (Dr. José Dutra de Oliveira)

Through UWI:

Caribbean Food and Nutrition Institute (CFNI), Kingston, Jamaica (Dr. A. W. Patterson)

Direct co-operative relationship:

International Food Policy Research Institute (IFPRI), Washington, D.C., USA (Dr. Per Pinstrup-Andersen)

International scientific unions:

International Union of Food Science and Technology (lUFoST)

International Union of Nutrition Sciences (IUNS)

The United Nations system:

The UNU Programme on Food and Nutrition for Human and Social Development co-operates with the appropriate units or divisions of the following organizations with which the University has memoranda of understanding:

Food and Agriculture Organization (FAO)

United Nations Children's Fund (UNICEF)

United Nations Research Institute for Social Development (UNRISD)

World Food Programme (WFP)

World Health Organization (WHO)

The University is represented on the Sub-committee on Nutrition (SCN) of the United Nations Administrative Committee on Co-ordination.

Research networks

Chronic energy deficiency

International Dietary Energy Consultative Group (IDECG). Secretariat: Nestlé Foundation, 4 Place de la Gare, Lausanne, Switzerland. Executive Secretary: Dr. Beat Schürch. Tel. 021-20 33 51. Telex: 454299 TXC CH. Fax: (Nestlé Foundation) 41 2 120 7524. Executive committee: Dr. Nevin S. Scrimshaw, Chairman; Dr. Joseph Hautvast, Dr. Beat Schürch

Division of Nutrition, National Institute of Nutrition, Calle Vasco de Quiroga No. 15 Col. y Deleg. Tlalpan, 14000 Mexico, D.F., Mexico. Principal investigator: Dr. Héctor Bourges

Ethiopian Nutrition Institute, Addis Ababa, Ethiopia. Principal investigator: Dr. Teshome Demeke

Institute of Health, Chinese Academy of Preventive Medicine, 10 Tian Tan Xili, Beijing, China. Principal investigator: Dr. Chen Xue-cun

Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile, Casilla 15138, Santiago 11, Chile. Principal investigator: Dr. José Riumallo

National Institute of Nutrition, Via Ardeatina 546, Rome, Italy. Principal investigator: Dr. Anna Ferro-Luzzi

Nutrition Research and Development Centre, Komplek GIZI, Jalan Semboja, Bogor, Indonesia. Principal investigator: Dr. Darwin Karyadi

Nutrition Research Centre, St. John's Medical College, Bangalore 5ó0 034, India. Principal investigator: Dr. Prakash S. Shetty

Universidad del Valle, Departamento de Pediatría, Facultad de Medicina, Apartado Aéreo 2188, Cali, Colombia. Principal investigator: Dr. Julio C. Reina

University of the West Indies, Kingston 7, Jamaica. Principal investigator: Dr. Sally McGregor

Iron-deficiency anaemia

Beijing Medical College-UNICEF, Department of Nutrition and Food Hygiene, Beijing. China. Principal investigator: Dr. Shiu-yun Liu

Institute of Nutrition. Mahidol University (INMU), Salaya Campus, c/o Research Centre, Faculty of Medicine, Ramathibodi Hospital, Rama VI Road, Bangkok 4, Thailand. Principal investigator: Dr. Aree Valyasevi

Institute of Nutrition and Food Technology (INTA), University of Chile, Casilla 15138, Santiago 11, Chile. Principal investigator: Dr. Tomas Walter

Institute of Nutrition of Central America and Panama (INCAP), Carretera Roosevelt, Zona 11, Guatemala City, Guatemala. Principal investigator: Dr. Benjamín Torún

Institute of Public Health, Rockefellerova 7, Zagreb, Yugoslavia. Principal investigator: Dr. Ratko Buzina.

National Institute of Hygiene, Yungan Hsi-lee, Chien Kuo Men-wai, Beijing, China. Principal investigator: Dr. Chen-ting Chin

National Research Centre, National Academy of Sciences, Cairo, Egypt. Principal investigator: Dr. Sohair Salem

National Institute of Nutrition, Cairo, Egypt. Principal investigator: Dr. Mohammed A. Hussein

Nutrition Research and Development Centre, Komplek GIZI, Jalan Semboja, Bogor. Indonesia. Principal investigator: Dr. Darwin Karyadi

Venezuelan Institute of Scientific Research (IVIC), Apartado 1827, Caracas, Venezuela. Principle investigator: Dr. Miguel Layrisse

Nutrition and primary health care

Baluchistan Integrated Programme Area Directorate. Baluchistan, Pakistan. Co-investigators: Farhat Sultana and Pamela Hunte

Caribbean Food and Nutrition Institute (CFNI). P.O. Box 140, Kingston 7, Jamaica. Principal investigator: Dr. Renee Dankerlin

Centre for Social Research and Chancellor College, University of Malawi, Box 278, Zomba, Malawi. Principal investigator: Dr. Christine Lamba

International Foster Parents Plan, Inc.. 804 Quaker Lane, East Greenwich, R.l., USA. Dr. Victor Lara

Institute of Nutrition, Mahidol University, Salaya Campus, c/o Research Centre, Faculty of Medicine, Ramathibodi Hospital, Rama Vl Road, Bangkok 4, Thailand. Principal investigator: Dr. Yongyout Kachonpadunkitti

Institute of Nutrition of Central America and Panama (INCAP) (for Central America), P.O. Box 1188, Guatemala City, Guatemala. Principal investigator: Lic. Elena Hurtado

Instituto de Nutrición y Tecnologia de los Alimentos, Universidad de Chile, Casilla 15138, Santiago 11, Chile. Principal investigator: Dr. Maria de la Luz Alvarez

Korea Advanced Institute of Science and Technology, Department of Management Science, P.O. Box 131. Cheongryang, Seoul, Korea. Principal investigator: Dr. Kong-Kyun Ro

Save the Children Fund, CPO Box 992, Kathmandu, Nepal. Principal investigator: Dr. Vijaya L. Shrestha

Society for Economic and Social Studies, B- I, 2nd Floor LSC, J Block, Saket, New Delhi 110 017, India. Principal investigator: Dr. D. Raghunandan

UNICEF-Haiti, Port-au-Prince. Haiti. Principal investigator: Dr. Maria D. Alvarez

UNICEF: USA, Evaluation Office, 3 United Nations Plaza. New York, NY 10017, USA. Dr. Susi Kessler

UN/FAO World Food Programme, Room F, 747 Via delle Terme di Caracalla. 00100 Rome, Italy. Dr. Jens H. Schulthes, Senior Programme Officer, Project Management Division

Universidad Javeriana, Bogotá, Colombia. Professors Marfa E. Romero and Adela Morales de Look

University of Ife, Dept. of Sociology and Anthropology, Ile-Ife, Nigeria. Principal investigator: Dr. Simi Afonia

University of Lubumbashi, Zaire (Shaba Province). Principal investigator: Ngakwey Ndolamb

University of Nairobi, Institute of African Studies, Nairobi, Kenya. Principal investigator: Dr. David O. Nyamwaya

World Bank, 1818 H St., NW, Washington, D.C., USA. Dr. Michael Cernea, Sociology Advisor

Brazil: Dra. Clarice Mota, Instituto de Filosofia e Ciências Sociais, Universidade Federal do Rio de Janeiro, Largo de Sao Francisco, 1/4 Andar, Rio de Janeiro, Brazil. Tel. (021) 239-1407

Brazil: Maria Cecilia de Sousa Minayo, Escola Nacional de Saúde Pública, Fundaçao Oswaldo Cruz-Brasil. Rua General Cristovão Barcelo, 24/802 Laranjeiras, Rio de Janeiro, Brazil. CEP: 22251. Tel. (021) 2900387

Ecuador: Jasmina Estupinan, Psiconsult, Apdo. Postal 148C, Batan 124 y Eloy Alfaro, Quito, Ecuador

Somalia: Asha Mohamud, Deputy Director, FH/FP Unit, Ministry of Health, P.O. Box 1750, Mogadisho, Somalia. Tel. 81977

International Network of Food Data Systems (INFOODS)

Secretariat: Bldg. N52-457, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge MA 02139, USA. Tel. (617) 253-8004. Telex: 650 2688345. Fax: ( + 1 overseas) (617) 491-6266

Project Co-ordinator: Dr. John Klensin

Executive Committee: Dr. Vernon Young, Chairman; Dr. Ricardo Bressani, Vice-Chairman

Committee on Users and Needs: Dr. Gaurth Hansen, Chairman

Committee on Data Quality: Dr. David Southgate, Chairman

Committee on Terminology and Nomenclature: Dr. Stewart Truswell, Chairman

Committee on Information Systems: Dr. John Klensin, Chairman

Regional liaison groups:

AFROFOODS. Co-ordinator: Mr. Claver R. Temalilwa, Tanzania Food and Nutrition Centre, Dar es Salaam, Tanzania

ASIAFOODS. Co-ordinator: Dr. Aree Valyasevi, Institute of Nutrition, Mahidol University, Bangkok, Thailand

EUROFOODS. Co-ordinator: Dr. Clive West, Department of Human Nutrition, Agricultural University, Wageningen, Netherlands

LATINFOODS. Co-ordinator: Dr. Ricardo Bressani, Institute of Nutrition of Central America and Panama (INCAP), Guatemala City, Guatemala

MENAFOODS. Co-ordinator: Dr. Mohamed Amr Hussein, Director, Nutrition Institute, Cairo, Egypt

NOAFOODS. Co-ordinator: Dr. Alex Campbell. Ottawa, Ontario, Canada

NORDICFOODS. Co-ordinator: Dr. Ake Bruce, Swedish National Food Administration, Uppsala, Sweden

OCEANIAFOODS. Co-ordinator: Dr. Ruth English, Department of Community Services and Health, Canberra, Australia

Note for contributors

The editors of the Food and Nutrition Bulletin welcome contributions of relevance to its concerns (see the statement of editorial policy on the inside of the front cover). Submission of an article does not guarantee publication - which depends on the judgement of the editors as to its relevance and quality. Contributors should review recent issues of the Bulletin for content and style.

Language. Contributions may be in English, French, or Spanish. If French or Spanish is used, the author should submit an abstract in English if possible.

Format. Manuscripts should be typed, double-spaced, with ample margins. Only an original typed copy or a photocopy of equivalent quality should be submitted; photocopies on thin or shiny paper are not acceptable.

When a manuscript has been prepared on a word processor, it will be appreciated if a floppy disk, either 3 1/2-inch or 54-inch, can be included with the manuscript, with an indication of the disk format and the word-processing program used.

Length. Ordinarily contributions should not exceed 4,000 words.

Abstract. An abstract of not more that 150 words should be included with the manuscript. The abstract should state the purposes of the study or investigation, basic procedures (study subjects or experimental animals and observational and analytical methods), main findings (give specific data and their statistical significance if possible), and the principal conclusions. Emphasize new and important aspects of the study or observations. Do not cite references or use abbreviations or acronyms in the abstract.

Tables and figures. Tables and figures should be on separate pages. Tables should be typed double-spaced. Submit only original figures, original line drawings in India ink, or glossy photographs. Labels on the figures should be typed or professionally lettered or printed. not handwritten.

Photographs. Ideally photographic materials should he submitted in the form of black and white negatives or black and white glossy prints. Photographs will not be returned unless a specific request is made.

Units of measurement. Preferably all measurements should be expressed in metric units. If other units are used, their metric equivalents should be indicated.

References. References should be listed at the end of the article, also double-spaced. Unpublished papers should not be listed in references, nor should papers submitted for publication but not yet accepted.

Number references consecutively in the order in which they are first mentioned in the text. Identify references in the text and in tables and figure legends by arabic numerals enclosed in square brackets. References cited only in tables or figure legends should be numbered in accordance with the first mention of the relevant table or figure in the text. Be sure references are complete.

Reference citations should follow the format illustrated below.

Journal reference

- standard journal article (list all authors):

1. Alvarez ML, Mikasic D, Ottenberger A, Salazar ME. Características de familias urbanas con lactante desnutrido: un análisis crítico. Arch Latinoam Nutr 1979;29:220-30.

- corporate author:

2. Committee on Enzymes of the Scandinavian Society for Clinical Chemistry and Clinical Physiology. Recommended method for the determination of gammaglutamyltransferase in blood. Scand J Clin Lab Invest 1976;36:119-25.

Book or other monograph reference - personal author(s):

3. Brozek J. Malnutrition and human behavior: experimental, clinical and community studies. New York: Van Nostrand Reinhold, 19135.

- corporate author:

4. American Medical Association, Department of Drugs. AMA drug evaluations. 3rd ed. Littleton, Mass, USA: Publishing Sciences Group, 1977.

- editor, compiler, chairman as author:

5. Medioni J, Boesinger E, eds. Mécanismes éthologiques de l'évolution. Paris: Masson, 1977.

- chapter in book:

6. Barnett HG. Compatibility and compartmentalization in cultural change. In: Desai AR, ed. Essays on modernization of underdeveloped societies. Bombay: Thacker, 1971.

Identification. Contributors should give their full name and highest degree, the name of departments and institutions to which the work should be attributed, the name and address of the author responsible for correspondence about the manuscript, and sources of support for the work. If the material in the article has been previously presented or is planned to be published elsewhere - in the same or modified form - a note should be included giving the details.

Manuscript copies. The contributor should keep a duplicate copy of the manuscript. Manuscripts will not be returned unless specifically requested. Proofs will be sent to the authors only in exceptional circumstances.

Contributions should be addressed to: The Editor Food and Nutrition Bulletin 9 Bow Street Cambridge, MA 02138, USA

Note à l'intention des auteurs

La rédaction du Food and Nutrition Bulletin recherche des articles traitant de sujets correspondent a ses thèmes (voir au vérso de la couverture la politique éditoriale de cette revue). La remise d'un manuscrit ne signifie pas sa publication, qui dépend de l'opinion de la rédaction sur son intérêt et sa qualité. Les auteurs vent invités a se pencher sur les récents numéros du Bulletin pour prendre connaissance de son contenu et de son style.

Langues. Les manuscrits peuvent être rédigés en anglais, en français ou en espagnol, et dan ces deux derniers cas, I'auteur ajoutera, si possible, un résumé en anglais.

Format. Les manuscrits doivent être dactylographiés. en double interligne, avec une marge suffisante. Ne doit être présenté qu'un exemplaire original dactylographié ou une photocopie de qualité équivalente.

Lorsqu'un manuscrit a été préparé sur un appareil de traitement de texte, un disque ou de 3,50 ou de 5,25 pouces devrait dans toute la mesure possible y être joint en précisant son format et le programme utilisé.

Longueur. Les manuscrits ne dovient pas, ordinairement, dépasser 4 000 mots.

Résumé. Un résumé de 150 mots maximum doit accompagner le manuscrit. Il devra donner les buts de l'étude ou des recherches, les procédures de base (sujets de l'étude ou animaux expérimentaux et méthodes d'observation et d'analyse), les principaux résultats (fournir des données spécifiques et indiquer dans la mesure du possible leur importance statistique) ainsi que les principales conclusions. Veuillez mettre en relief les aspects nouveaux et importants de l'étude ou des observations. Dans le résumé, ne citez aucun ouvrage de référence et n'utilisez ni abréviations ni sigles.

Tableaux et figures. Ils doivent être reportés sur des feuillets séparés. Les tableaux doivent être dactylographiés en double interligne. Veuillez soumettre uniquement des figures originales, des dessins a l'encre de Chine ou des photographies tirées sur papier glacé. Les labels qui apparaissent sur les figures doivent être dactylographiés ou gravés ou imprimés de manière professionnelle et non pas écrits a la main.

Photographies. En principe, les matériaux photographiques doivent être remis sous forme de négatifs noir et blanc ou d'épreuves noir et blanc sur papier brillant. Sauf demande expresse les photographies ne seront pas renvoyées.

Unités de mesure. On utilisera de préférence le système métrique. Si d'autres systèmes vent utilisés, l'équivalant métrique doit être indiqué.

Références. Les références doivent apparaître a la fin de ['article, en double interligne également. Les documents non publiés ne doivent pas figurer dans les références pas davantage que les documents présentés a des fins de publication mais qui n'ont pas encore été acceptés.

Veuillez numéroter les références dans l'ordre ou elles vent mentionnées dans le texte. Identifiez au moyen d'un chiffre arabe placé entre crochets les références dan le texte, les tableaux et les légendes des figures. Les références cités uniquement dans les tableaux ou les légendes des figures doivent être numérotées en fonction de la premiere fois où il est fait mention du tableau ou de la figure approprié dans le texte. Assurez-vous que les références vent complètes.

Les références citées doivent suivre le format décrit ci-dessous. Journal - article de journal type (énumérer tous les auteurs):

1. Alvarez ML, Mikasic D, Ottenberger A, Salazar ME. Caracteristicas de familias urbanas con lactante desnutrido: un análisis crítico. Arch Latinoam Nutr 1979;29:220-30.

- auteur d'une société.

Livre ou autre monographie - auteur(s) à titre personnel:

3. Brozek I. Malnutrition and human behavior: experimental, clinical and community studies. New York: Van Nostrand Reinhold, 1985.

- auteur d'une société:

4. American Medical Association, Department of Drugs. AMA drug evaluations. 3e éd. Littleton, Mass. (E.U.): Publishing Sciences Group, 1977.

- éditeur, compilateur, président en tant qu'auteur:

5. Medioni J, Boesinger E, éds. Mécanismes éthologiques de l'évolution. Paris: Masson, 1977.

- chapitre d'un ouvrage:

6. Barnett HG. Compatibility and compartmentalization in cultural change. Dans: Desai AR, éd. Essays on modernization of underdeveloped societies. Bombay: Thacker, 1971.

Identification. Les auteurs doivent indiquer leur nom complet et leur principal diplôme, le nom des départements et des institutions auxquels le travail doit être attribué, le nom et l'adresse de l'auteur chargé de la correspondance sur le manuscrit ainsi que les sources de financement du travail. Si ['article a déjà été remis auparavant ou est retenu pour une autre publication - sous la même forme ou sous une forme modifiée - on l'indiquera de façon détaillée.

Copies du manuscrit. L'auteur doit conserver un double. Les manuscrits ne seront pas retournés a moins que leurs auteurs n'en fassent expressément la demande. Les épreuves seront envoyées aux auteurs dans des circonstances exceptionnelles seulement.

Les auteurs s'adresseront a: The Editor Food and Nutrition Bulletin 9 Bow Street Cambridge, MA 02138, USA

Nota para los posibles autores

Los editores del Food and Nutrition Bulletin agradecen el envio de contribuciones pertinentes al tema de la revista (vea la política editorial de esta revista en cl interior de la tapa anterior). La presentación de un articulo no es garantía de su publicación. la cual dependerá del criterio de los editores en lo que respecta a su pertinencia y calidad. Se ruega a los que deseen colaborar que consulten los números recientes de Food and Nutrition Bulletin para cerciorarse de su contenido y estilo.

Idioma. Las contribuciones podrán remitirse en español, francés o inglés. En caso de utilizar español o francés, el autor deberá incluir, de ser posible, un resumen en inglés.

Formato. Los manuscritos deberán presentarse mecanografiadas, a doble espacio. con márgenes amplios. Solamente se presentarán originales mecanografiados o una fotocopia de los mismos de calidad equivalente. No se admitirán fotocopias en papel fino o satinado.

Si ha preparado el manuscrito con máquina de tratamiento de textos, agradeceremos nos envíe junto al manuscrito una copia del disco floppy. bien en 3 1/2 pulgadas. bien en 5 1/4 pulgadas, indicando el formato del disco y el programa de tratamiento de textos que ha utilizado.

Longitud. Las contribuciones ordinarias no deberán exceder las 4.000 palabras.

Resúmenes. Se adjuntará al manuscrito un resumen que no exceda de 150 palabras. El resumen indicará cl objetivo del estudio o investigación, métodos básicos (individuos, animales seleccionados en experimentos y métodos de observación y análisis), descubrimientos principales (si fuera posible aportando datos específicos y su significado estadístico), y las conclusiones principales. Se enfatizarán los aspectos nuevos c importantes del estudio u observaciones. En el resumen no se citarán referencias ni se usarán abreviaturas ni siglas.

Cuadros y figuras. Todos los cuadros y figuras deberán presentarse en hojas de papel por separado. Los cuadros se mecanografiarán a doble espacio. Se presentarán solamente figuras originales. esquemas originales en tinta china o fotografías en papel brillo. Los nombres de las figuras estarán mecanografiados o impresos o rotulados profesionalmente. y no manuscritos.

Fotografías. El material fotográfico se presentará preferentemente en blanco y negro, en negativos o en impresión sobre papel brillante. No se devolverá este material fotográfico a no ser que así lo solicite el remitente.

Unidades de medida . Se utilizará preferentemente cl sistema métrico decimal. De utilizarse otras unidades, deberán indicarse sus equivalentes en el sistema métrico decimal.

Referencias. Al final del articulo deberán consignarse las referencias, también en doble espacio. En las referencias no se consignarán documentos que no se hayan publicado, ni aquellos que hayan solicitado su publicación pero que no se han aceptado todavía.

Las referencias se numerarán consecutivamente en el orden en que aparecen en el texto. Las referencias en cl texto, en los cuadros y en los epígrafes de figuras se identificarán con números arábigos encerrados entre paréntesis rectangulares. Las referencias que se citan solamente en cuadros o epígrafes de figuras se numerarán de acuerdo con la primera mención que se haga en el texto del cuadro o figura pertinente. Debe asegurarse que se dan todas las referencias.

Las citas hechas a referencias deben adjustarse al formato indicado a continuación.

Referencia a publicación periódica

-artículo modelo de publicación periódica (consignar todos los autores):

1. Alvarez Ml. Mikasic D, Ottenberger A. Salazar ME. Características de familias urbanas con lactante desnutrido: un análisis critico. Arch Latinoam Nutr 1979;29:220-30.

- untares corporativos:

Referencia a libro u otra monografia -autor(es) personal(es):

3. Brozek J. Malnutrition and human behavior: experimental. clinical and community studies. Nueva York: Van Nostrand Reinhold, 1985.

- autor corporativo.

4. American Medical Association, Department of Drugs. AMA drug evaluations. 3ra. edición. Littleton, Mass., EE.UU.: Publishing Sciences Group, 1977.

- editor recopilador presidente de consejo como autor:

5. Medioni J. Boesinger E, editores. Mécanismes éthologiques de l'évolution. Paris: Masson, 1977.

- capítulo de libro:

6. Barnett HG. Compatibility and compartmentalization in cultural change. En: Desai AR, editor. Essays on modernization of underdeveloped societies. Bombay: Thacker. 1971.

Identificación. Los autores deberán consignar su nombre completo y titulación más alta, nombre del departamento e instituciones a las que se atribuirá el trabajo. el nombre y la dirección del autor responsable de la correspondencia del manuscrito, y fuentes de sustentación del trabajo. Si el material del articulo ha sido presentado previamente o se prevé publicación en otra parte, en forma igual o modificada. se deberá agregar una nota con detalles sobre dicha publicación.

Copias de la contribución El contribuyente deberá conservar una copia del material que envíe. No se devolverán los manuscritos a no ser que se pida su devolución. Las correcciones de prueba se enviarán a los autores solamente en casos excepcionales.

Las contribuciones deberán dirigirse a: The Editor Food and Nutrition Bulletin 9 Bow Street Cambridge, MA 02138, USA

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