1. Division of Gynecological Endocrinology and Reproductive Medicine Bern University Hospital and University of Bern Bern Switzerland
2. Graduate School for Health Sciences University of Bern Bern Switzerland
3. Institute for Pathology Bern University Hospital and University of Bern Bern Switzerland
4. Department of Gynecology and Gynecological Oncology University Hospital of Bern and University of Bern Bern Switzerland
5. Institute of Social and Preventive Medicine University of Bern Bern Switzerland
6. Division of Reproductive Medicine and Gynecological Endocrinology Lucerne Cantonal Hospital Lucerne Switzerland