title: Verapamil versus acebutolol for syndrome X.
mesh_terms: D000070:Acebutolol / Q000627:therapeutic use*; D000787:Angina Pectoris / Q000188:drug therapy* / Q000209:etiology; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D005082:Physical Exertion; D011897:Random Allocation; D013577:Syndrome; D014700:Verapamil / Q000627:therapeutic use*
chemical_list: D000070:Acebutolol; D014700:Verapamil