1. Department of Plastic and Hand Surgery, University of Erlangen Medical Center, Erlangen, Germany.
2. Department of Pathology, University of Erlangen Medical Center, Erlangen, Germany.
3. Department of Pharmacology and Toxicology, University of Erlangen Medical Center, Erlangen, Germany.
4. Department of Materials Science, Glass and Ceramics, University of Erlangen, Erlangen, Germany.
5. Department of Molecular and Experimental Surgery, University of Erlangen Medical Center, Erlangen, Germany.