1. Department of Plastic Surgery and Hand Surgery, University Hospital Zurich, 8091 Zurich, Switzerland
2. Department of Plastic Surgery and Hand Surgery, Cantonal Hospital Aarau, 5001 Aarau, Switzerland
3. Department of Plastic, Reconstructive and Aesthetic Surgery, Regional Hospital Lugano, 6900 Lugano, Switzerland
4. Department of Plastic Surgery and Hand Surgery, Gemeinschaftskrankenhaus Havelhoehe, 14089 Berlin, Germany
5. Department of Plastic Surgery & Hand Surgery, Burn Center, Medical Faculty, Hospital of the RWTH Aachen University, 52074 Aachen, Germany
6. Center of Intensive Care Medicine, Cantonal Hospital Winterthur, 8400 Winterthur, Switzerland