1. FBW Gynaecology Plus, Adelaide 5035, Australia
2. Department of Obstetrics & Gynaecology, Flinders Medical Centre, Bedford Park 5042, Australia
3. Flinders University, Adelaide 5042, Australia
4. Adelaide Medical School, University of Adelaide, Adelaide 5005, Australia
5. School of Electrical & Electronic Engineering, University of Adelaide, Adelaide 5005, Australia