1 Dermatology Clinic, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.
2 Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy.
3 Current affiliation: Dermatology Unit, ASST Papa Giovanni XXIII Hospital, Bergamo, Italy.
4 Scientific Direction, Clinical Epidemiology and Biometric Unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.
5 Laboratory of Immuno-Allergology of Clinical Chemistry and Pediatric Clinic, Fondazione IRCCS Policlinico San Matteo and University of Pavia, Viale Camillo Golgi, 19, Pavia, 27100, Italy.