[1] Royal Devon & Exeter NHS Fdn Trust, Dept Obstet & Gynecol, Exeter EX2 5DW, Devon, England
[2] Royal Marsden Hosp, Dept Gynaecol, St Bartholomews Royal London Sch Med & Dent, London SW3 6JJ, England
[3] Derriford Hosp, Dept Gynecol Oncol, Plymouth PL6 8DH, Devon, England
[4] Derriford Hosp, Dept Histopathol, Plymouth PL6 8DH, Devon, England