[1] Harvard TH Chan Sch Publ Hlth, Dept Global Hlth & Populat, Boston, MA 02115 USA
[2] Tufts Univ, Sch Med, Boston, MA 02111 USA
[3] Africa Acad Publ Hlth, Dar Es Salaam, Tanzania
[4] Muhimbili Univ Hlth & Allied Sci, Dept Community Hlth, Dar Es Salaam, Tanzania
[5] Harvard TH Chan Sch Publ Hlth, Dept Nutr, Boston, MA USA
[6] Harvard Med Sch, Boston Childrens Hosp, Div Gastroenterol Hepatol & Nutr, Boston, MA USA
[7] Management & Dev Hlth, Dar Es Salaam, Tanzania
[8] Muhimbili Univ Hlth & Allied Sci, Dept Obstet & Gynecol, Dar Es Salaam, Tanzania
[9] Muhimbili Univ Hlth & Allied Sci, Dept Microbiol & Immunol, Dar Es Salaam, Tanzania
[10] Harvard TH Chan Sch Publ Hlth, Dept Epidemiol, Boston, MA USA
[11] Muhimbili Univ Hlth & Allied Sci, Dept Pediat & Child Hlth, Dar Es Salaam, Tanzania