1. Department of Women’s and Newborn Health, Westmead Hospital, Westmead, NSW 2145, Australia
2. Western Sydney University, Campbelltown, NSW 2560, Australia
3. University of Sydney, Camperdown, NSW 2006, Australia
4. Sydney West Advanced Pelvic Surgery Unit, NSW, Australia
5. Department of Radiology, Westmead Hospital, Westmead, NSW 2145, Australia