1. Department of Trauma Surgery, University Medical Center Utrecht, Utrecht, The Netherlands
2. Department of Orthopedic and Trauma Surgery, Cantonal Hospital Lucerne, Lucerne, Switzerland
3. Department of Health Sciences and Medicine, University of Lucerne, Lucerne, Switzerland
4. Department of Trauma Surgery, Leiden University Medical Center, Leiden, The Netherlands
5. Department of Thoracic Surgery, Cantonal Hospital Lucerne, Lucerne, Switzerland