title: Perverse T waves and chronic beta-blocker treatment.
mesh_terms: D000070:Acebutolol / Q000009:adverse effects; D000319:Adrenergic beta-Antagonists / Q000009:adverse effects*; D000328:Adult; D001262:Atenolol / Q000009:adverse effects; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D011433:Propranolol / Q000009:adverse effects
chemical_list: D000319:Adrenergic beta-Antagonists; D001262:Atenolol; D000070:Acebutolol; D011433:Propranolol