| Affiliation: | 1. Department of Pediatric Pneumology and Immunology, Charité Medical University, Berlin, Germany;2. Pediatric Unit, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy;3. Pediatric Clinic of Medicine and Surgery, University of Parma, Parma, Italy;4. Pediatric Department and Pediatric Allergology Unit, Sandro Pertini Hospital, Rome, Italy;5. Biostatistics, L'Altra Statistica srl, Consultancy & Training, Rome, Italy;6. Allergology Service, San Carlo Clinic, Paderno Dugnano, Milan, Italy;7. Pediatric Emergency Unit, S. Orsola‐Malpighi Hospital, Bologna, Italy;8. Pediatric Unit, San Camillo Forlanini Hospital, Rome, Italy;9. Dipartimento della Donna, del Bambino e di Chirurgia Generale e Specialistica, Università della Campania Luigi Vanvitelli, Naples, Italy;10. Pediatric Department, La Sapienza University, Rome, Italy;11. Pediatric Unit, Fatebenefratelli Hospital, Benevento, Italy;12. Pediatric Highly Intensive Care Unit, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy;13. Pediatric Intermediate Care Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy;14. Pediatric Section, Department of Life and Reproduction Sciences, University of Verona, Verona, Italy;15. Pediatric Allergology and Immunology Unit, Policlinico Tor Vergata, University of Rome Tor Vergata, Rome, Italy;16. Pediatric Unit, San Giuseppe Hospital, Empoli, Italy;17. Pediatric Unit, Grassi Hospital, Rome, Italy;18. Pediatric Unit, Santa Barbara Hospital, Iglesias, Italy;19. Pulmonary Disease and Allergy Unit, G. Gaslini Hospital, Genoa, Italy;20. Pediatric Unit, Crotone, Italy;21. Primary Care Pediatrics, ASL Salerno, Vietri sul Mare, Italy;22. Department of Laboratory Medicine, University Hospital of Padua, Padua, Italy |
