1. Medical Faculty, Johannes Kepler University Linz, Altenbergerstr. 69, 4040 Linz, Austria
2. Section of Plastic, Aesthetic and Reconstructive Surgery, Kepler University Hospital Linz, Krankenhausstrasse 9, 4020 Linz, Austria
3. Department of Plastic, Reconstructive, Hand and Burn Surgery, BG-Trauma Center, Eberhard Karls University Tübingen, 72076 Tübingen, Germany