1. Department of Emergency Medicine, Inselspital-Bern University Hospital, Freiburgstrasse, 3010 Bern, Switzerland
2. Department of Surgery, Spitalzentrum Biel AG, 2502 Biel, Switzerland
3. Department of Internal Medicine, Spital Altstätten, 9450 Altstätten, Switzerland
4. Department of Surgery, Kantonsspital Graubünden, 7000 Chur, Switzerland
5. Department of Emergency Medicine, Kantonsspital Graubünden, 7000 Chur, Switzerland