1. Department of Internal Medicine (E.A., F.H., C.D.), General Hospital Oberndorf, 5110 Oberndorf, Austria
2. Gynecology and Obstetrics (N.B.), Paracelsus Medical University Salzburg, 5020 Salzburg, Austria
3. Departments of Laboratory Medicine (K.K., W.P.), Paracelsus Medical University Salzburg, 5020 Salzburg, Austria
4. Division of Gynecological Endocrinology and Reproductive Medicine (C.D.G.), Women’s Hospital, University of Basel, CH-4031 Basel, Switzerland