1. Experimental Plastic Surgery, Clinic for Plastic, Reconstructive and Hand Surgery, Klinikum Rechts der Isar, Technical University of Munich, D-81675 Munich, Germany
2. Institute of Molecular Immunology and Experimental Oncology, Klinikum Rechts der Isar, Technical University of Munich, D-81675 Munich, Germany
3. Department of Plastic, Reconstructive and Aesthetic Surgery, Isar Klinikum, D-80331 Munich, Germany
4. Department of Trauma Surgery, Orthopedics and Plastic Surgery, University Medical Center Göttingen, D-37075 Göttingen, Germany