1. From the International Centre for Diarrhoeal Diseases and Research, Bangladesh, Dhaka, Bangladesh (KKS, DSA, and SEA); the Department of Health Promotion, Education, and Behavior, University of South Carolina, Columbia, SC (EAF); the International Maternal and Child Health, Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden (LÅP); and the Division of Nutritional Scie