1. Department for Plastic, Reconstructive, Aesthetic, and Hand Surgery, Fachklinik Hornheide, Münster, Germany
2. Department of Dermatology, University of Bonn Medical Centre, Germany
3. Department of Plastic Surgery and Hand Surgery, Klinikum rechts der Isar der Technischen Universität München, München, Germany
4. Department of Trauma, Hand, and Reconstructive Surgery, University Hospital Münster, Münster, Germany