[1] Univ Ulm, Gynecol & Obstet, D-89069 Ulm, Germany
[2] Univ Hosp Hamburg Eppendorf, Gynecol & Obstet, Hamburg, Germany
[3] Hosp Ludwig Maximilians Univ Munich, Munich, Germany
[4] Univ Erlangen Nurnberg, D-91054 Erlangen, Germany
[5] Univ Tubingen Hosp, Tubingen, Germany
[6] Heidelberg Univ, Natl Ctr Tumor Dis NCT, Med Oncol, Heidelberg, Germany
[7] German Canc Res Ctr, Heidelberg, Germany
[8] Univ Clin Essen, Essen, Germany
[9] Univ Dusseldorf, Dusseldorf, Germany