University of Oxford - National Perinatal Epidemiology Unit (NPEU), Gauhati Medical College Hospital, Banaras Hindu University (BHU) - Institute of Medical Science (IMS), Makunda Christian Leprosy and General Hospital, Fakhruddin Ali Ahmed Medical College and Hospital (FAAMCH), Fakhruddin Ali Ahmed Medical College and Hospital (FAAMCH), Silchar Medical College and Hospital (SMCH), Jorhat Medical College and Hospital, Assam Medical College (AMC), Nazareth Hospital, Mahatma Gandhi Institute of Medical Sciences, Tezpur Medical College and Hospital, Sewa Bhawan Hospital Society, Srimanta Sankaradeva University of Health Sciences, London School of Hygiene & Tropical Medicine - Faculty of Epidemiology and Population Health, Government of the United Kingdom - Royal Wolverhampton NHS Trust, University of Oxford - Department of Physiology, University of California, Los Angeles (UCLA) - David Geffen School of Medicine and Independent