1. Paediatric Unit, Department of Translational Medical Sciences, Cystic Fibrosis Regional Reference Center University of Naples Federico II Naples Italy
2. Adult Unit, Department of Translational Medical Science, Cystic Fibrosis Center University of Naples Federico II Naples Italy
3. Department of Pathophysiology and Transplantation, Cystic Fibrosis Regional Reference Center Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico University of Milan Milan Italy
4. Mother ‐ Child Department, Cystic Fibrosis Regional Reference Center United Hospitals Ancona Italy
5. Cystic Fibrosis Centre Bambino Gesù Children's Hospital, IRCCS Rome Italy
6. IRCCS Istituto Giannina Gaslini Genova Italy
7. Department of Molecular Medicine and Medical Biotechnology University of Naples Naples Italy
8. CEINGE‐Advanced Biotechnology Naples Italy
9. Department of Paediatric Medicine, Meyer Children's Hospital IRCCS Cystic Fibrosis Regional Reference Center Florence Italy