1. Department of Orthopaedic, Trauma and Plastic Surgery, University Hospital Leipzig, 04103 Leipzig, Germany
2. Department of Plastic, Hand Surgery and Burn Care, BG Klinikum Bergmannstrost, 06112 Halle, Germany
3. Klinik am Rosental GmbH, 04105 Leipzig, Germany
4. Department of Trauma and Reconstructive Surgery, Martin-Luther-University Halle-Wittenberg, 06120 Halle, Germany
5. Department of Trauma and Reconstructive Surgery, BG Klinikum Bergmannstrost, 06112 Halle, Germany
6. Department of Trauma, Plastic and Reconstructive Surgery, University Hospital Jena, 07747 Jena, Germany