A clinical study of asthma in children.
D000293:Adolescent; D001249:Asthma / Q000453:epidemiology / Q000503:physiopathology*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D012307:Risk Factors; D012621:Seasons