[1] Med Univ Vienna, Dept Obstet & Gynaecol, Vienna, Austria
[2] Innsbruck Med Univ, Dept Gynecol & Obstet, Innsbruck, Austria
[3] Med Univ Vienna, Dept Pathol, Vienna, Austria
[4] Charite, Dept Gynecol, Berlin, Germany
[5] Univ Hosp Leuven, Dept Gynecol & Obstet, Leuven, Belgium
[6] Katholieke Univ Leuven, Div Gynecol Oncol, Leuven, Belgium
[7] Univ Med Ctr Hamburg Eppendorf, Dept Gynecol, Hamburg, Germany
[8] Ludwig Maximilian Univ Munich, Dept Gynecol & Obstet, Munich, Germany