Chronic pulmonary disease in children.
D001784:Blood Gas Analysis; D001999:Bronchoscopy; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D006801:Humans; D008171:Lung Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011859:Radiography; D013147:Spirometry; D013183:Sputum / Q000032:analysis; D014374:Tuberculin Test