1. Quality and Safety Unit, Riviera-Chablais Hospital, Vevey, Switzerland
2. IFROSS Institute, University of Lyon 3, Lyon, France
3. Stat’Elite Statistics Institute, Nyon, Switzerland
4. Executive Board, Riviera-Chablais Hospital, Vevey, Switzerland
5. Obstetrics and Gynecology; Riviera-Chablais Hospital, Vevey, Switzerland