1. Department of Health Sciences, University Magna Graecia of Catanzaro, Catanzaro, Italy
2. Department of Clinical Medicine and Surgery, Section of Dermatology, University of Naples Federico II, Naples, Italy
3. Department of Medicine, Section of Dermatology, University of Brescia, Brescia, Italy
4. Pediatric Dermatology Unit, Department of Clinical Sciences and Community Health, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
5. Unit of Dermatology, IRCCS AOU di Policlinico S Orsola, University of Bologna, Bologna, Italy
6. Department of Medical Sciences, Division of Dermatology, University of Turin, Turin, Italy
7. Department of Medicine, Section of Dermatology and Venereology, University of Verona, Verona, Italy
8. Department of Medicine and Surgery, Dermatology Section, University of Perugia, Perugia, Italy
9. Dermatology Unit, University of Campania Luigi Vanvitelli, Caserta, Italy
10. Department of Medical-Surgical Sciences and Biotechnologies, Dermatology Unit "Daniele Innocenzi", Sapienza University of Rome, Polo Pontino, Latina, Italy
11. Dermatology Unit, Policlinico Tor Vergata, System Medicine Department, University of Tor Vergata, Rome, Italy
12. U.O. Dermatologia, Ospedale San Marco, Catania, Italy
13. Dermatology Unit, Arcispedale Santa Maria Nuova, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
14. Policlinico Hospital-University of Messina, Messina, Italy
15. UOS Immuno Allergologia dell’Età evolutiva, Ospedale San Pietro-Fatebenefratelli, Roma, Italy
16. Pediatric Endocrinology Unit, Regina Margherita Children’s Hospital, Città Della Salute e Della Scienza di Torino, Torino, Italy
17. Dermatologia, Dipartimento Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
18. Dermatologia, Dipartimento Universitario di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Rome, Italy
19. Dermatology Unit, Azienda Ospedaliera di Cosenza, Cosenza, Italy
20. Pediatric Respiratory Unit, Department of Clinical and Experimental Medicine, San Marco Hospital, University of Catania, Catania, Italy
21. Department of Pediatrics, Pediatric Clinic, Fondazione IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy
22. Department of Pediatrics, Garibaldi Hospital, Catania, Italy
23. Pediatric Allergy and Pulmonology Unit, Department of Pediatrics, University of Chieti-Pescara, Chieti, Italy
24. Pediatric Allergology and Immunology Unit, University of Rome Tor Vergata, Policlinico Tor Vergata, Rome, Italy
25. Department of Medicine, Division of Allergy and Clinical Immunology, "Santa Maria della Speranza" Hospital, Battipaglia, SA, Italy
26. Department of Medical Sciences, and Public Health, Dermatology Clinic, University of Cagliari, Cagliari, Italy
27. Research Unit of Clinical Immunology and Vaccinology, Academic Department of Pediatrics (DPUO), Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
28. Dermatologic Clinic, AOU Maggiore della Carità Hospital, Novara, Italy
29. Dermatology Unit, Department of Surgery and Translational Medicine, University of Florence, Florence, Italy
30. Department of Pediatrics, Central Hospital of Bolzano, Bolzano, Italy
31. Dermatology Unit, Ospedale San Bortolo, Vicenza, Italy
32. Division of Dermatology, Santa Chiara Hospital, Trento, Italy
33. Dipartimento Scienze Mediche, Chirurgiche e Sperimentali, Università di Sassari, Sassari, Italy
34. UOC Dermatologia Ospedale San Donato, Arezzo, Italy
35. Dermatology, Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila, L’Aquila, Italy