Affiliation: | (1) Division of Geographic Medicine, Department of International Health, The Johns Hopkins University School of Hygiene and Public Health, 615 N. Wolfe Street, 21205 Baltimore, Maryland, USA;(2) Instituto de Investigacion Nutricional, Apartado 55, Miraflores, Lima, (Peru);(3) International Centre for Diarrheal Diseases Research, Dhaka 2, P.O. Box 128, Bangladesh, (Bangladesh) |