[1] Oxford Univ Hosp NHS Fdn Trust, Oxford, England
[2] Buckinghamshire NHS Fdn Trust, Aylesbury, Bucks, England
[3] Royal Berkshire NHS Fdn Trust, Reading, Berks, England
[4] Univ Brescia, Dept Clin & Expt Sci, Brescia, Italy
[5] Univ Palermo, Dept Hlth Promot Mother & Child Care Internal Med, Unit Gynecol Oncol, ARNAS Civ Di Cristina Benfratelli, Palermo, Italy
[6] Guys & St Thomas NHS Fdn Trust, Gynaecol, London, England
[7] Univ Hosp Derby & Burton NHS Fdn Trust, Derby, England