[1] Erlangen Univ Hosp, Comprehens Canc Ctr Erlangen, Dept Gynecol & Obstet, European Metropolitan Area Nuremberg CCC ER EMN, Univ Str 21-23, D-91054 Erlangen, Germany
[2] Klinikum Sindelfingen Boblingen, Dept Gynecol & Obstet, Bunsenstr 120, D-71032 Boblingen, Germany
[3] Erlangen Univ Hosp, Comprehens Canc Ctr Erlangen, European Metropolitan Area Nuremberg CCC ER EMN, Inst Pathol, Krankenhausstr 8-10, D-91054 Erlangen, Germany
[4] Klinikum Furth, Dept Gynecol & Obstet, Jakob Henle Str 1, D-90766 Furth, Germany
[5] Friedrich Alexander Univ Erlangen Nuremberg, Dept Med Informat Biometry & Epidemiol, Waldstr 6, D-91054 Erlangen, Germany