1. Clinic of Trauma Surgery, University Medical Center Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
2. Clinic of Trauma and Hand Surgery, Altötting, Vinzenz-von-Paul-Straße 10, 84503 Altötting, Germany
3. Clinic of Trauma Surgery, Bad Neustadt, Von-Guttenberg-Straße 11, 97616 Bad Neustadt an der Saale, Germany