Affiliations

• Department of Respiratory Medicine, Ghent University Hospital, Ghent, Belgium. Department of Internal Medicine and Paediatrics, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium. These authors contributed equally.
• Pulmonology Department, General Hospital of Thessaloniki G. Papanikolaou, Thessaloniki, Greece.
• These authors contributed equally.
• Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
• Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy.
• University of Groningen, University Medical Centre Groningen, Department of Pulmonary Diseases and TB Center Beatrixoord, Groningen, The Netherlands.
• Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal.
• EPI Unit, Instituto de Saúde Pública da Universidade do Porto, Porto, Portugal.
• Instituto Nacional de Saúde Doutor Ricardo Jorge, Porto, Portugal.