title: Cystic fibrosis--a survey.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001724:Birth Weight; D002170:Canada; D002648:Child; D002675:Child, Preschool; D003550:Cystic Fibrosis / Q000175:diagnosis / Q000453:epidemiology*; D005260:Female; D005767:Gastrointestinal Diseases / Q000175:diagnosis; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D012140:Respiratory Tract Diseases / Q000175:diagnosis; D012189:Retrospective Studies