1. Department of Dermatology and Venerology Federal Academic Teaching Hospital of Feldkirch Feldkirch Austria
2. Department of Dermatology University of Munich Munich Germany
3. Section of Dermatology Department of Medicine University of Verona Verona Italy
4. Division of Evidence Based Medicine (dEBM) Department of Dermatology Charité ‐ Universitätsmedizin Berlin Berlin Germany