1. College of Medical and Dental Sciences, University of Birmingham Medical School, Birmingham, UK
2. Department of Gynaecological Oncology, The Royal Wolverhampton NHS Trust, Wolverhampton, UK
3. Department of Obstetrics and Gynaecology, Walsall Manor Hospital, Walsall, UK
4. Department of Obstetrics and Gynaecology, The Shrewsbury and Telford Hospital NHS Trust, Shrewsbury, UK