Affiliation: | 1. Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom;2. Department of Cardiac Technology, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia;3. Makunda Christian Leprosy and General Hospital, Assam, India;4. Gauhati Medical College and Hospital, Assam, India;5. Silchar Medical College and Hospital, Assam, India;6. Institute of Medical Sciences, Banaras Hindu University, Uttar Pradesh, India;7. Fakhruddin Ali Ahmed Medical College and Hospital, Assam, India;8. Jorhat Medical College and Hospital, Assam, India;9. Nazareth Hospital, Meghalaya, India;10. Srimanta Sankaradeva University of Health Sciences, Assam, India;11. Department of Medical Statistics, London School of Hygiene and Tropical Medicine, London, United Kingdom;12. MRC Population Health Research Unit, Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom;13. National Perinatal Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom |