title: Step care for asthma.
authors.forename: R C
authors.initials: RC
authors.lastname: Bone
mesh_terms: D001249:Asthma / Q000188:drug therapy* / Q000401:mortality; D004359:Drug Therapy, Combination; D005938:Glucocorticoids / Q000008:administration & dosage*; D006801:Humans
chemical_list: D005938:Glucocorticoids