Institution: | 1. Department of Trauma and Orthopaedic Surgery, Cologne Merheim Medical Centre, Witten/Herdecke University, Ostmerheimer Strasse 200, 51109, Cologne, Germany 2. Department of Surgery, Hospital Cologne-Porz, Urbacherweg 19, 51149, Cologne, Germany 3. Department of Trauma, Hand and Reconstructive Surgery, Grosshadern Hospital Munich, Ludwig Maximilian University Munich, Marchioninistra?e 15, 81377, Munich, Germany
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