1. Department of Obstetrics and Gynaecology, University Hospital and University of Bern, Switzerland
2. Department of Biomedical Research, University of Bern, Switzerland
3. Department of Obstetrics and Gynaecology, University Hospital and University of Bern, Switzerland; Department of Biomedical Research, University of Bern, Switzerland; Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School
4. Department of Obstetrics and Gynaecology, University Hospital and University of Bern, Switzerland; Department of Biomedical Research, University of Bern, Switzerland