title: Prinzmetal's angina in Singapore.
mesh_terms: D000368:Aged; D000788:Angina Pectoris, Variant / Q000175:diagnosis / Q000188:drug therapy*; D000792:Angiography; D003329:Coronary Vasospasm / Q000188:drug therapy*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009543:Nifedipine / Q000627:therapeutic use*; D011725:Pyridines / Q000627:therapeutic use*; D012846:Singapore
chemical_list: D011725:Pyridines; D009543:Nifedipine