title: Long-term patterns of obstructive lung disease in cystic fibrosis.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003550:Cystic Fibrosis / Q000150:complications*; D005260:Female; D005500:Follow-Up Studies; D005541:Forced Expiratory Volume; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis* / Q000209:etiology; D008297:Male; D014797:Vital Capacity