Letter: Management of asthma in childhood.
D000336:Aerosols; D000367:Age Factors; D001249:Asthma / Q000188:drug therapy* / Q000401:mortality; D002648:Child; D006801:Humans; D007545:Isoproterenol / Q000008:administration & dosage / Q000627:therapeutic use*
D000336:Aerosols; D007545:Isoproterenol