1. Cancer Epidemiology Unit, Nuffield Department of Population Health; University of Oxford; Oxford UK
2. The Evidence-Based Medicine Consultancy Ltd; Bath UK
3. Obstetrics and Gynaecology; St Mary's Hospital, University Hospitals Bristol and Weston NHS Foundation Trust; Bristol UK
4. Department of Gynaecological Oncology; St. Michael's Hospital; Bristol UK
5. Oxford Medical School; University of Oxford; Oxford UK
6. Internal Medicine Department; Mercyone North Iowa; Mason City Iowa USA
7. Kingston Hospital NHS Foundation Trust; Kingston upon Thames UK
8. Department of Gynaecological Oncology; Musgrove Park Hospital, Somerset NHS Foundation Trust; Taunton UK