1. Department of PediatricsPulmonary and Allergy Disease Unit and Cystic Fibrosis CenterGenoaItaly
2. Microbiology LaboratoryIRCCS Istituto Giannina GasliniGenoaItaly
3. Telethon Institute of Genetics and MedicinePozzuoliItaly
4. Division of Pediatric PulmonologyMiller School of MedicineUniversity of MiamiMiamiFL