1. Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
2. Department of Surgery, Bronovo Hospital, 2597 AX The Hague, The Netherlands
3. Department of Trauma Surgery, University Hospital Zurich, Rämistrasse 100, 8006 Zürich, Switzerland
4. Department of Infectious Diseases, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands