1. Mothers and Babies Research Centre (University of Newcastle)/Endocrine Unit (R.S., J.I.S., P.J.E., M.E.B., S.A.M.), John Hunter Hospital, Newcastle, NSW 2305, Australia
2. Melbourne School of Engineering (X.S.), University of Melbourne, VIC 3010, Australia
3. Division of Obstetrics and Gynaecology (A.M.B.), John Hunter Hospital, Newcastle, NSW 2305, Australia
4. Hunter Medical Research Institute (P.M.), John Hunter Hospital, Newcastle, NSW 2305, Australia
5. Northern Clinical School (W.B.G.), University of Sydney, Royal North Shore Hospital, St. Leonards, NSW 2065, Australia
6. Faculty of Engineering, Computing and Mathematics (D.W.S.), University of Western Australia, Crawley, WA 6009, Australia