1. Department of Internal Medicine I, University Hospital Regensburg, Germany
2. Department of Surgery, University Hospital Regensburg, Germany
3. Institute of Pathology, University Hospital Zurich, Switzerland
4. Department of Dermatology, University Hospital Regensburg, Germany
5. Department of Cranio-Maxillo-Facial Surgery, University Hospital Regensburg, Germany
6. Institute of Biochemistry, University of Erlangen, Germany