Villar José, Merialdi Mario, Gülmezoglu A Metin, Abalos Edgardo, Carroli Guillermo, Kulier Regina, de Onis Mercedes
UNDP/UNFPA/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction, WHO, CH-1211 Geneva 27, Switzerland.
J Nutr. 2003 May;133(5 Suppl 2):1632S-1639S. doi: 10.1093/jn/133.5.1632S.