1. Trauma Department, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
2. Department of Trauma and Hand Surgery, Heinrich Heine University Hospital, Moorenstraße 5, 40225 Düsseldorf, Germany
3. Department for Experimental Trauma Surgery, Technical University of Munich, Ismaningerstraße 22, 81675 München, Germany