1. Department of Hand-, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, Department of Hand- and Plastic Surgery, University of Heidelberg, 69120 Heidelberg, Germany
2. Hand and Arm Center, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02215, USA
3. Department of Plastic, Reconstructive and Hand Surgery, Erasmus Medical Center, Erasmus University, 3015 GD Rotterdam, The Netherlands
4. Division of Plastic and Reconstructive Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02215, USA
5. Department of Hand Surgery, Peripheral Nerve Surgery and Rehabilitation, BG Trauma Center Ludwigshafen, 67071 Ludwigshafen, Germany