1 San Gallicano Dermatological Institute, via Elio Chianesi 53, Rome, 00144, Italy.
2 Biostatistical Unit, San Gallicano Dermatological Institute, via Elio Chianesi 53, Rome, 00144, Italy.
3 Department of Dermatology and Pediatric Dermatology, INSERM U 1035, Bordeaux University Hospitals, University of Bordeaux, 1 Rue Jean Burguet, 33000, Bordeaux, France.