Affiliation: | 1. Department of Trauma and Orthopaedic Surgery, Clinic for Sports Traumatology, Cologne-Merheim Medical Center, University of Witten-Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany 2. Department of Trauma and Orthopaedic Surgery, Cologne-Merheim Medical Center, University of Witten-Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany
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