1. Dermatopathology Friedrichshafen Friedrichshafen Germany
2. Research Unit Dermatopathology, Department of Dermatology Medical University of Graz Graz Austria
3. Centre of Orthopedic and Trauma Surgery, Department of Oncologic Surgery, Sarcoma Centre Berlin Brandenburg Berlin Germany
4. Pathology Department MVZ am Helios Klinikum Emil von Behring Berlin Germany
5. Pathology Institut Jules, Bordet Brussels Belgium