Chronic lung disease: inception in childhood.
D000293:Adolescent; D001982:Bronchial Diseases / Q000175:diagnosis; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D006801:Humans; D007223:Infant; D008171:Lung Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011859:Radiography; D012907:Smoking