1. Internal Medicine Department; Respiratory Unit and Cystic Fibrosis Adult Centre; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano; Milan Italy
2. Department of Pathophysiology and Transplantation; Università degli Studi di Milano; Milan Italy
3. Department of Respiratory Medicine; Lungentransplantation; Hannover Medical School; Hanover Germany
4. Department of Cardiothoracic, Transplant and Vascular Surgery; Hannover Medical School; Hanover Germany
5. Biomedical Research in End-Stage and Obstructive Lung Disease (BREATH); German Centre for Lung Research (DZL); Hanover Germany
6. CF-Centre for Children and Adults; Department of Paediatrics; Jena University Hospital; Jena Germany