[1] Univ Hosp Ulm, Gynecol & Obstet, Ulm, Germany
[2] Klinikum Ludwig Maximilians Univ, Gynecol & Obstet, Munich, Germany
[3] Univ Hosp Erlangen, Gynecol & Obstet, Erlangen, Germany
[4] Univ Hosp Tubingen, Gynecol & Obstet, Tubingen, Germany
[5] Univ Heidelberg Hosp, Natl Ctr Tumor Dis, Heidelberg, Germany
[6] Univ Heidelberg Hosp, Dept Gynecol & Obstet, Heidelberg, Germany
[7] Univ Hosp Hamburg Eppendorf, Gynecol & Obstet, Hamburg, Germany
[8] Univ Hosp Essen, Gynecol & Obstet, Essen, Germany
[9] Univ Hosp Hamburg Eppendorf, Dept Tumor Biol, Hamburg, Germany
[10] Univ Dusseldorf, Gynecol & Obstet, Dusseldorf, Germany