1. Health Organisation , Policy and Economics Group, School of Health Sciences, , Manchester M13 9PL , UK
2. University of Manchester , Policy and Economics Group, School of Health Sciences, , Manchester M13 9PL , UK
3. Gynaecological Oncology Research Group , Division of Cancer Sciences, Faculty of Biology, Medicine and Health, , Manchester M13 9PL , UK
4. University of Manchester , Division of Cancer Sciences, Faculty of Biology, Medicine and Health, , Manchester M13 9PL , UK
5. Department of Obstetrics and Gynaecology , St Mary's Hospital, Manchester Academic Health Science Centre, , Manchester M13 9WL , UK
6. Manchester University NHS Foundation Trust , St Mary's Hospital, Manchester Academic Health Science Centre, , Manchester M13 9WL , UK