Education and follow-up.
D000367:Age Factors; D001249:Asthma / Q000628:therapy*; D002648:Child; D002675:Child, Preschool; D003466:Cultural Characteristics; D005192:Family Health; D006801:Humans; D010353:Patient Education as Topic; D010366:Peak Expiratory Flow Rate; D016032:Randomized Controlled Trials as Topic; D012129:Respiratory Function Tests; D012720:Severity of Illness Index; D012923:Social Class