Institutional Review Board Statement
The study was conducted in accordance with the Declaration of Helsinki and was approved by the following Institutional Review Boards: Children, Youth and Women’s Health Service, North Adelaide, SA, Australia; Flinders Medical Centre, Bedford Park, SA, Australia; King Edward Memorial Hospital, Subiaco, WA, Australia; Royal Women’s Hospital, Parkville, VIC, Australia; and Royal Brisbane and Women’s Hospital, Herston, QLD, Australia Informed consent was obtained from mothers involved in the study.