University of Oxford - National Perinatal Epidemiology Unit (NPEU), State Institute of Health and Family Welfare - Department of Health & Family Welfare, Mahendra Mohan Choudhury Hospital, Mahatma Gandhi Institute of Medical Sciences, Gauhati Medical College Hospital, Dhubri Civil Hospital, Silchar Medical College and Hospital (SMCH), Tezpur Medical College and Hospital, Nazareth Hospital, Fakhruddin Ali Ahmed Medical College and Hospital (FAAMCH), Mahatma Gandhi Institute of Medical Sciences, Jorhat Medical College and Hospital, Fakhruddin Ali Ahmed Medical College and Hospital (FAAMCH), Banaras Hindu University (BHU) - Institute of Medical Science (IMS), Silchar Medical College and Hospital (SMCH), Nazareth Hospital, Jorhat Medical College and Hospital, Makunda Christian Leprosy and General Hospital, Dr. Rajendra Prasad Government Medical College, Dr. Rajendra Prasad Government Medical College, Assam Medical College (AMC), MaatHRI, University of Oxford - National Perinatal Epidemiology Unit and University of Oxford - National Perinatal Epidemiology Unit (NPEU)