[1] Univ Hosp Leipzig, Div Breast Gynecol & Perinatal Pathol, Inst Pathol, Leipzig, Germany
[2] Univ Hosp Leipzig, Dept Obstet Gynecol, Leipzig, Germany
[3] Sana Country Hosp, Dept Obstet Gynecol, Borna, Germany
[4] Univ Hosp Leipzig, Inst Trier, Dept Obstet Gynecol, Dept Obstet & Gynecol, Leipzig, Germany
[5] Univ Hosp Leipzig, Inst Pathol, Div Mol Pathol, Leipzig, Germany
[6] Heinrich Braun City Hosp, Dept Obstet & Gynecol, Zwickau, Germany