1. Leicester General Hospital; Obstetrics and Gynaecology; Gwendolen Road Leicester UK LE5 4PW
2. National University of Ireland; Department of General Practice; Galway Ireland
3. Newcastle upon Tyne Hospitals NHS Foundation Trust; Directorate of Women's Services; Royal Victoria Infirmary Queen Victoria Road Newcastle upon Tyne UK NE1 4LP
4. University of Leicester; Reproductive Sciences Sections, Cancer Studies & Molecular Medicine; RKB, Leicester Royal Infirmary Leicester Leicestershire UK LE2 7LX