- Correspondence to Dr Manuel Mutschler, Department of Trauma and Orthopedic Surgery, Cologne-Merheim Medical Center (CMMC), University of Witten/Herdecke, Ostmerheimer Str. 200, Cologne D-51109, Germany;
- Received April 10, 2013
- Accepted September 12, 2013
- First published September 26, 2013.
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