1. University Hospital for Visceral, Transplant and Thoracic Surgery, Medical University of Innsbruck, Innsbruck, Austria
2. University Hospital for General and Critical Care Surgery, Medical University of Innsbruck, Innsbruck, Austria
3. University Hospital for Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
4. University Hospital for Orthopaedics, Medical University of Innsbruck, Innsbruck, Austria