mean ( sem ) time to onset of angina was increased from 293 ( 32 ) s when receiving placebo to 347 ( 38 ) s when receiving diltiazem alone , to 350 ( 30 ) s when receiving propranolol alone , and further to 421 ( 34 ) s when receiving diltiazem and propranolol combined .
C0002962
angina
C0033497
propranolol