Affiliation: | 1. Pediatric Asthma and Cough Centre, Istituti Ospedalieri Bergamaschi, Bergamo, Italy;2. Pediatric Unit, San Giuseppe Hospital, Empoli, Florence, Italy;3. Pediatric and Neonatology Unit, San Giovanni di Dio Hospital, Crotone, Italy;4. Pediatric Unit, Polistena Hospital, Reggio Calabria, Italy;5. Pediatric Pulmonology and Allergy Unit, Istituto Giannina Gaslini, Genoa, Italy |