1. Private Dermatology Practice Lugano/Bellinzona Switzerland
2. University of Caxias do Sul Caxias do Sul Brazil
3. Dermatology Unit San Bortolo Hospital Vicenza Italy
4. Imperial College NHS Healthcare Trust London UK
5. Dermatology Unit IRCCS Azienda Ospedaliero‐Universitaria di Bologna, Policlinico S. Orsola‐Malpighi Bologna Italy
6. Department of Medical and Surgical Sciences Alma Mater Studiorum University of Bologna Bologna Italy