[1] Radboud Univ Nijmegen, Med Ctr, Dept Obstet & Gynecol, NL-6500 HB Nijmegen, Netherlands
[2] Radboud Univ Nijmegen, Med Ctr, Dept Gynaecol Oncol, NL-6500 HB Nijmegen, Netherlands
[3] Univ Groningen Hosp, Dept Gynecol Oncol, NL-9700 RB Groningen, Netherlands
[4] Univ Med Ctr Groningen, Dept Gynaecol Oncol, NL-9713 AV Groningen, Netherlands