title: Asthma--still a challenge for general practice.
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000009:adverse effects*; D000368:Aged; D001249:Asthma / Q000139:chemically induced*; D001986:Bronchial Spasm / Q000139:chemically induced*; D006801:Humans; D008875:Middle Aged; D011433:Propranolol / Q000009:adverse effects
chemical_list: D000319:Adrenergic beta-Antagonists; D011433:Propranolol