1. Department of Emergency Medicine, Inselspital, 3010 Bern, Switzerland
2. Department of Gynaecology and Obstetrics, Inselspital, 3010 Bern, Switzerland
3. Department of Visceral Surgery and Medicine, Inselspital, 3010 Bern, Switzerland
4. Division of Anaesthesia, Intensive Care and Emergency Medicine, Department of Emergency Medicine Inselspital, 3008 Bern, Switzerland