1. Department of Plastic, Hand, and Reconstructive Surgery, University Medical Center Regensburg, Germany
2. Department of Plastic, Reconstructive and Aesthetic Surgery, Helios Hospital Munich West, Munich, Germany
3. Department of Plastic, Reconstructive, Hand and Burn Surgery, Bogenhausen Academic Teaching Hospital, Munich, Germany
4. Department of Anesthesiology and Intensive Care Medicine, Helios Hospital Munich West, Munich, Germany
5. Department of Hand, Plastic and Aesthetic Surgery, Ludwig-Maximilians-University Munich, Germany