1. Department of Hand, Plastic and Reconstructive Surgery, BG Unfallklinik Tuebingen, Eberhard Karls University Tuebingen, Tuebingen, Germany
2. Department of Plastic Surgery, Burn Center, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
3. Centre of Plastic, Aesthetic, Hand and Reconstructive Surgery, University of Regensburg, Regensburg, Germany
4. Department of Anesthesiology and Intensive Care Medicine, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany