University of South Carolina, Africa Academy of Public Health, Harvard University - Department of Global Health and Population, University of Toronto, University of Toronto - SAR Laboratories, Institute for Clinical Effectiveness and Health Policy, Institute for Clinical Effectiveness and Health Policy, Muhimbili University of Health and Allied Sciences, Harvard University - Beth Israel Deaconess Medical Center, Harvard University - Department of Global Health and Population, Harvard University - Department of Epidemiology, Ifakara Health Institute, Africa Academy of Public Health, St John’s Research Institute, St John's Medical College, St John’s Medical College - Department of Biostatistics, St John’s Medical College - Department of Physiology, Muhimbili University of Health and Allied Sciences - Department of Obstetrics and Gynaecology and Harvard University - Department of Global Health and Population