time to onset of angina increased from 472 +/- 191 seconds with propranolol alone to 564 +/- 123 seconds ( p = ns ) after propranolol-nifedipine treatment and to 607 +/- 197 seconds ( p less than 0.05 ) after propranolol-diltiazem treatment .
C0002962
angina
C0033497
propranolol