Childhood asthma.
D000328:Adult; D000367:Age Factors; D001249:Asthma / Q000150:complications / Q000453:epidemiology* / Q000503:physiopathology; D002648:Child; D004739:England; D006801:Humans; D008168:Lung / Q000503:physiopathology; D012129:Respiratory Function Tests; D012135:Respiratory Sounds / Q000503:physiopathology; D012907:Smoking