National University of Singapore (NUS) - Department of Obstetrics and Gynaecology, National University of Singapore (NUS) - Department of Obstetrics and Gynaecology, National University of Singapore (NUS) - Department of Obstetrics and Gynaecology, National University of Singapore (NUS) - Department of Pediatrics, National University of Singapore (NUS) - Department of Pediatrics, National University of Singapore (NUS), Agency for Science, Technology and Research (A*STAR) - Singapore Institute for Clinical Sciences (SICS), Duke-NUS Graduate Medical School Singapore, KK Women’s and Children’s Hospital, KK Women’s and Children’s Hospital - Department of Paediatrics, KK Women’s and Children’s Hospital, Agency for Science, Technology and Research (A*STAR) - Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A*STAR) - Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A*STAR) - Singapore Institute for Clinical Sciences (SICS), University of Southampton - MRC Lifecourse Epidemiology Unit, Agency for Science, Technology and Research (A*STAR) - Singapore Institute for Clinical Sciences (SICS) and National University of Singapore (NUS) - Department of Obstetrics and Gynaecology

National University of Singapore (NUS) - Infectious Disease Translational Research Programme, National University of Singapore (NUS), National University of Singapore (NUS), Division of Respiratory and Critical Care Medicine, University Medicine Cluster, National University Hospital, Division of Respiratory and Critical Care Medicine, University Medicine Cluster, National University Hospital, Department of Respiratory Medicine, Ng Teng Fong Hospital, Division of Respiratory and Critical Care Medicine, University Medicine Cluster, National University Hospital, Division of Respiratory and Critical Care Medicine, University Medicine Cluster, National University Hospital, Division of Respiratory and Critical Care Medicine, University Medicine Cluster, National University Hospital, Yong Loo Lin School of Medicine, National University of Singapore, Yong Loo Lin School of Medicine, National University of Singapore, Yong Loo Lin School of Medicine, National University of Singapore, Yong Loo Lin School of Medicine, National University of Singapore, Yong Loo Lin School of Medicine, National University of Singapore and Division of Respiratory and Critical Care Medicine, University Medicine Cluster, National University Hospital