1. Centre for Human Nutrition, Department of Public Health and Policy
2. Maternal and Child Epidemiology Unit, Department of Epidemiology and Population Sciences, London School of Hygiene and Tropical Medicine, London WC1E 7HT, United Kingdom
3. Departamento de Nutrição do Centro de Ciências da Saúde, Universidade Federal de Pernambuco, CEP51320-210 Recife-PE, Brazil