1. Dermatologie, Venerologie und Allergologie Universitätsklinikum Schleswig‐Holstein Keil Germany
2. Department of Dermatology Mazandaran University of Medical Sciences Sari Iran
3. AP‐HP Dermatology Department Saint‐Louis Hospital, INSERM U976, Université Paris Diderot‐Paris VII, Sorbonne Paris Cité Paris France
4. First Department of Dermatology School of Medicine, Aristotle University Thessaloniki Greece
5. Department of Dermatology Venereology and Allergology, Wroclaw Medical University Wroclaw Poland
6. Department of Dermatology University of Studies Guglielmo Marconi Rome Italy
7. University of Rome G. Marconi Rome Italy
8. Department of Dermatology University Medical Center Mainz Mainz Germany
9. Department of Dermatology University Hospital Basel Basel Switzerland