title: Stepwise therapy of bronchial asthma: the role of beta-adrenergic agonists.
authors.forename: H S
authors.initials: HS
authors.lastname: Nelson
mesh_terms: D000284:Administration, Oral; D000318:Adrenergic beta-Agonists / Q000627:therapeutic use*; D000336:Aerosols; D001249:Asthma / Q000188:drug therapy*; D001993:Bronchodilator Agents / Q000627:therapeutic use*; D005541:Forced Expiratory Volume; D006339:Heart Rate; D006801:Humans; D007267:Injections; D007528:Isoetharine / Q000627:therapeutic use; D013806:Theophylline / Q000627:therapeutic use
chemical_list: D000318:Adrenergic beta-Agonists; D000336:Aerosols; D001993:Bronchodilator Agents; D013806:Theophylline; D007528:Isoetharine