1. Department of Plastic and Hand Surgery, Erlangen University Hospital, Germany
2. Department of Plastic and Hand Surgery, Sana Hospital Hof, Germany
3. Department of Plastic and Cosmetic Surgery, Union Hospital, Tongji Medical College of Huazhong University of Science and Technology, Hubei, China
4. Department of Materials Science and Engineering, Institute for Biomaterials, University of Erlangen-Nuremberg, Germany