1. Gynecological Hospital; University Medical Center Freiburg; Freiburg Germany
2. German Cancer Research Center; Heidelberg Germany
3. Department of Obstetrics and Gynecology; Tongji Hospital, Tongji University; Shanghai China
4. Klinik für Gynäkologie und Geburtshilfe; St. Elisabeth-Hospital; Bochum Germany
5. Department of Molecular and Cellular Biochemistry BBSRB; University of Kentucky; Lexington Kentucky