title: The 'overlap' method of comparing drugs.
mesh_terms: D000368:Aged; D000787:Angina Pectoris / Q000188:drug therapy*; D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D009566:Nitrates / Q000627:therapeutic use*; D005996:Nitroglycerin / Q000627:therapeutic use; D011299:Prenylamine / Q000627:therapeutic use*
chemical_list: D009566:Nitrates; D005996:Nitroglycerin; D011299:Prenylamine