1. Division of Obstetrics and Gynaecology, Faculty of Health and Medical Sciences The University of Western Australia M550, 35 Stirling Highway Crawley Western Australia 6008 Australia
2. Department of Ultrasound King Edward Memorial Hospital 374 Bagot Road Subiaco Western Australia Australia
3. Women and Infants Research Foundation (WIRF) Carson House, King Edward Memorial Hospital 374 Bagot Road Subiaco Western Australia Australia
4. Maternal Fetal Medicine Service King Edward Memorial Hospital 374 Bagot Road Subiaco Western Australia Australia