Improvements in lung function of a pediatric cystic fibrosis population in a developing country.
D000293:Adolescent; D002648:Child; D003550:Cystic Fibrosis / Q000150:complications / Q000503:physiopathology / Q000628:therapy*; D003906:Developing Countries; D005260:Female; D006801:Humans; D008297:Male; D010043:Outcome and Process Assessment, Health Care; D012129:Respiratory Function Tests; D012189:Retrospective Studies; D012720:Severity of Illness Index; D013019:South Africa