1. Department of Plastic and Hand Surgery, Burn Center, Ruhr University, BG University Hospital Bergmannsheil, Bochum, Germany
2. Department of Plastic, Reconstructive and Esthetic Surgery, Handsurgery, Martin-Luther-Hospital, Berlin, Germany
3. Department of Hand, Plastic and Reconstructive Surgery, Ruprechts-Karl-University Heidelberg, BG Trauma Center, Ludwigshafen, Germany
4. Institute for Clinical Chemistry, Transfusion and Laboratory Medicine, Ruhr University, BG University Hospital Bergmannsheil, Bochum, Germany