title: Difficult asthma.
authors.forename: S
authors.initials: S
authors.lastname: Packham
mesh_terms: D001249:Asthma / Q000188:drug therapy*; D001993:Bronchodilator Agents / Q000008:administration & dosage*; D002986:Clinical Trials as Topic; D006801:Humans; D007263:Infusions, Parenteral; D007279:Injections, Subcutaneous; D013726:Terbutaline / Q000008:administration & dosage*; D016896:Treatment Outcome
chemical_list: D001993:Bronchodilator Agents; D013726:Terbutaline