1 Department of Obstetrics and Gynaecology, University of Melbourne, Melbourne, Australia.
2 Reproductive Epidemiology Group, Murdoch Children's Research Institute, Melbourne, Australia.
3 Department of Perinatal Medicine, Mercy Hospital for Women, Melbourne, Victoria, Australia.
4 Department of Obstetrics and Gynaecology, The Northern Hospital, Melbourne, Victoria, Australia.
5 Professor of Maternal and Child Population Health, National Perinatal Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Oxford UK.
6 Maternal-Fetal Medicine staff specialist, Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Massachusetts General Hospital, Boston, MA, USA.
7 Harvard Medical School, Assistant Professor of Obstetrics, Gynecology and Reproductive Biology, Boston, MA, USA.
8 Principal Investigator, Vincent Center for Reproductive Biology, Massachusetts General Hospital, Boston, MA, USA.
9 Professor, Co-Program Director Maternal, Child and Adolescent Health, Burnet Institute, Melbourne, Victoria, Australia.
10 Group Leader, Vaccine Uptake, Murdoch Children's Research Institute, Melbourne Australia.
11 Associate Professor, Department of Paediatrics, University of Melbourne, Melbourne, Australia.
12 Consultant paediatrician, Department of General Medicine, Royal Children's Hospital, Melbourne, Victoria, Australia.