1. Department of Orthopaedic Surgery and Traumatology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
2. Department of Trauma and Orthopaedics, Leeds Teaching Hospitals NHS Trust, United Kingdom
3. Department of Trauma Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
4. Servicio de Cirugía Ortopédica y Traumatología, Hospital 12 de Octubre, Madrid, España
5. Major Trauma Centre, Leeds Teaching Hospitals NHS Trust, University of Leeds, United Kingdom