1. Institute for Clinical & Experimental Surgery Saarland University Homburg/Saar Germany
2. Biophysics Department Center for Human and Molecular Biology Saarland University Homburg/Saar Germany
3. Department of Trauma, Hand and Reconstructive Surgery Saarland University Homburg Germany
4. Departement of Trauma and Reconstructive Surgery Eberhar Karls University Tuebingen Tuebingen Germany
5. Division of Plastic Surgery and Hand Surgery University Hospital Zurich University of Zurich Zurich Switzerland
6. Medical Biochemistry and Molecular Biology Saarland University Homburg Germany
7. Department of Pharmacology Alberta Diabetes Institute University of Alberta Edmonton AB Canada