1. Dermatologic Unit, Department of Medicine and Surgery, University of Insubria, 21100 Varese, Italy
2. Dermatologic Unit, Centro Medico Polispecialistico, 27100 Pavia, Italy
3. Unit of Clinic Epidemiology and Biometric Scientific Direction, Foundation IRCCS Policlinic San Matteo, 27100 Pavia, Italy
4. Department of Mathematics and Applications, University of Milan Bicocca, 20125 Milano, Italy
5. Meidicine and Surgery Department, Università Vita-Salute San Raffaele, 20132 Milan, Italy
6. Dermatology Clinic, IRCCS San Raffaele Scientific Institute, 20158 Milan, Italy
7. Centrum Medyczne dr Kubik, Skwer Kościuszki 15/17, 81-370 Gdynia, Poland
8. UB-CARE S.r.l.-Spin-Off, University of Pavia, 27100 Pavia, Italy
9. Department of Biomedical Sciences and Human Oncology, Section of Dermatology, University of Bari, 70121 Bari, Italy