1. Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG-Trauma Center Ludwigshafen/Rhine, Department of Hand and Plastic Surgery, University of Heidelberg, 67071 Ludwigshafen, Germany
2. Department of Internal Medicine 1 and Clinical Chemistry, University Hospital of Heidelberg, 69120 Heidelberg, Germany
3. German Center for Diabetes Research, 85764 Neuherberg, Germany
4. Department of Neuroradiology, Heidelberg University Hospital, 69120 Heidelberg, Germany
5. Joint Heidelberg-ICD Translational Diabetes Program, Helmholtz-Zentrum, 85764 Neuherberg, Germany
6. Department of Handsurgery, Peripheral Nerve Surgery and Rehabilitation, BG Trauma Hospital, 67071 Ludwigshafen, Germany
7. Department of Orthopedic Surgery, Section Upper Extremity, University Hospital Heidelberg, 69120 Heidelberg, Germany