Does adult chronic obstructive lung disease really begin in childhood?
D000293:Adolescent; D000328:Adult; D001249:Asthma / Q000150:complications; D001991:Bronchitis / Q000150:complications; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D008173:Lung Diseases, Obstructive / Q000209:etiology* / Q000517:prevention & control; D011014:Pneumonia / Q000150:complications; D011379:Prognosis; D012130:Respiratory Hypersensitivity / Q000150:complications; D012135:Respiratory Sounds; D012306:Risk; D012907:Smoking