1. Department of Obstetrics and Gynaecology Royal North Shore Hospital Northern Sydney Local Health District St Leonards New South WalesAustralia
2. Department of Urogynaecology Gold Coast University Hospital Gold Coast QueenslandAustralia
3. Faculty of Medicine and Health The University of Sydney Northern Clinical School Sydney New South WalesAustralia
4. Women and Babies Research Kolling Institute Royal North Shore Hospital The University of Sydney Sydney New South WalesAustralia
5. Discipline of Obstetrics, Gynaecology and Neonatology Faculty of Medicine and Health The University of Sydney Northern Clinical School Sydney New South Wales Australia