1. Division/Laboratory of Medical Genetics; San Camillo-Forlanini Hospital; Rome Italy
2. Laboratory of Medical Genetics; Papa Giovanni XXIII Hospital; Bergamo Italy
3. Department of Dermatology and Plastic Surgery; Campus Biomedico University Hospital; Rome Italy
4. Pediatric Dermatology, Department of Physiopathology and Transplantation; Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico di Milano; University of Milan; Milan Italy
5. Laboratory of Medical Genetics; IRCCS-Ospedale Pediatrico Bambino Gesù; Rome Italy
6. Laboratory of Human Genetics; Galliera Hospital; Genoa Italy
7. Department of Medical Genetics; Galliera Hospital; Genoa Italy