1 Dept of Respiratory Medicine, University Children's Hospital, Hannover Medical School, Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Hannover, Germany.
2 Molecular Genetics Unit, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III (ISCIII), Madrid, Spain.
3 Dept of Pediatric Pneumology, Allergy and Neonatology, University Children's Hospital, Hannover Medical School, Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Hannover, Germany.