1. University of Aachen Medical Center, Department
of Orthopaedic Trauma, 30 Pauwels street, 52074
Aachen, Germany.
2. University Hospital Regensburg, Department
of Trauma Surgery, Franz-Josef-Strauss-Allee
11, 93053 Regensburg, Germany.
3. UT Health Science Center at San Antonio, Department
of Orthopaedic Surgery, Division of Orthopaedic
Traumatology 7703 Floyd Curl Dr, MC-7774, San
Antonio, TX 78229, USA.
4. Cologne Merheim Medical Center, Department
of Trauma and Orthopaedic Surgery, Ostmerheimer
Str. 200, 51109 Cologne, Germany.