1. Department of Obstetrics and Gynecology King Edward Memorial Hospital Perth Western Australia Australia
2. Division of Obstetrics and Gynecology The University of Western Australia Perth Western Australia Australia
3. Maternal Fetal Medicine Service, King Edward Memorial Hospital Perth Western Australia Australia
4. Department of Gynecological Oncology King Edward Memorial Hospital Perth Western Australia Australia
5. Department of Paediatric and Perinatal Pathology PathWest, Perth Children's Hospital Perth Western Australia Australia