1. Department of Gynaecology and Obstetrics, Klinikum Hochrhein, Waldshut-Tiengen, Germany
/ Medical Faculty of the University of Basel, Switzerland
2. Medical Faculty of the University of Basel, Switzerland
3. Division of General and Emergency Medicine, University Department of Medicine, Kantonsspital Aarau, Switzerland
4. Medical Faculty of the University of Basel, Switzerland
/ Division of General and Emergency Medicine, University Department of Medicine, Kantonsspital Aarau, Switzerland
5. Department of Medicine, Massachusetts General Hospital, Boston, USA