[1] Lindi Municipal Council, Dept Hlth Social Welf & Nutr, Lindi, Tanzania
[2] Southern Med Univ, Sch Publ Hlth, Guangzhou, Guangdong, Peoples R China
[3] Ruangwa Dist Council, Dept Hlth Social Welf & Nutr, Lindi, Tanzania
[4] Amref Hlth Afr, Dept Dis Control Program, Dar Es Salaam, Tanzania
[5] Amref Int Univ, Sch Publ Hlth, Nairobi, Kenya
[6] Southern Zone Referral Hosp, Dept Obstet & Gynecol, Mtwara, Tanzania
[7] Jackson Fiah Doe Reg Referral Hosp, Dept Internal Med, Tappita, Liberia