1. Institute of Human Genetics; Westfälische Wilhelms-Universität Münster (WWU); Münster Germany
2. Department of Obstetrics and Gynecology; Agaplesion Bethesda Krankenhaus; Wuppertal Germany
3. Department of Obstetrics and Gynecology; Evangelisches Krankenhaus Köln-Weyertal; Köln-Weyertal Germany
4. Division of Gynecology; Poznan University of Medical Sciences; Poznan Poland
5. Department of Obstetrics and Gynecology; Medical School Hannover; Hannover Germany