1. Department of Plastic Surgery, Hand Surgery, Burn Center, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany
2. Institute of Biochemistry and Molecular Cell Biology, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany
3. Department of Orthopedic Surgery, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany