1. Women's and Children's Health Department University of Padua Padua Italy
2. Pediatric Unit, Department of Clinical, Surgical, Diagnostic and Pediatric Sciences University of Pavia Pavia Italy
3. Pediatric Clinic Fondazione IRCCS Policlinico San Matteo Pavia Italy
4. Pediatric Unit, Department of Mother and Child Health Salesi Children's Hospital Ancona Italy
5. Pediatric Pulmonary Unit “Anna Meyer” IRCCS Pediatric University‐Hospital Florence Italy
6. Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico Milan Italy
7. Pediatric Asthma and Cough Centre, Istituti Ospedalieri Bergamaschi University and Research Hospitals Bergamo Italy
8. Laboratorio Della Conoscenza Carlo Corchia, APS Florence Italy
9. Department of Mother and Child Health Azienda USL Toscana Nord Ovest Pisa Italy