The Relation of CFTR-Genotype and Associated Comorbidities to Development of Pulmonary Atelectasis in Cystic Fibrosis Patients M. Martínez-Redondo; C. Prados Sánchez; F. García-Rio; E. Quintana Gallego; S. Castillo Corullón; A. Salcedo Posadas; R. Girón Moreno; M.T. Martínez Martínez; L. Máiz Carro; C. Martin de Vicente; J. Costa Colomer; R. Álvarez-Sala Walther;