1. Unfallkrankenhaus Berlin; Centre for Clinical Research, Department of Trauma and Orthopaedic Surgery; Berlin Germany 12683
2. Charite-Universitatsmedizin Berlin; Chariteplatz 1 Berlin Germany
3. Virginia Commonwealth University; Department of Surgery; Richmond VA USA
4. University Hospital; Department of Trauma and Reconstructive Surgery; Greifswald Germany 17475
5. Unfallkrankenhaus Berlin; Department of Diagnostic and Interventional Radiology; Warener Str 7 Berlin Germany 12683