1. Charité ‐ Universitätsmedizin Berlin corporate member of Freie Universität Berlin Humboldt‐Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venereology and Allergology Division of Evidence‐Based Medicine (dEBM)
2. Dermatological Practice München‐Neuhausen Munich
3. Department of Dermatology and Allergology Ludwig‐Maximilian University Munich
4. Department of Visceral Vascular and Endocrine Surgery University Hospital Halle Halle/Saale
5. Department and Clinic for Oral and Maxillofacial Surgery and Plastic Surgery University Hospital Greifswald
6. Dermatological Practice Paasch Gotha Jesewitz OT Gotha
7. Department of Radiology University Hospital Erlangen
8. Skin Center Am Forsterpark Augsburg
9. Department or Dermatology University Hospital Erlangen