1. Gynaecological Oncology Research Group, Division of Cancer Sciences, Faculty of Biology, Medicine and Health University of Manchester Manchester UK
2. Department of Obstetrics and Gynaecology, Manchester Academic Health Science Centre, St Mary's Hospital Manchester University NHS Foundation Trust Manchester UK
3. Cytology Department, Clinical Sciences Centre, Manchester Academic Health Science Centre Manchester University NHS Foundation Trust Manchester UK
4. Faculty of Epidemiology and Population Health London School of Hygiene and Tropical Medicine London UK
5. Centre for Cancer Prevention, Wolfson Institute of Population Health Queen Mary University of London London UK