Brian Livesley, Patricia F. Catley, R. C. Campbell, Samuel Oram
Livesley B, Catley P F, Campbell R C, Oram S.
Double-blind Evaluation of Verapamil, Propranolol, and Isosorbide Dinitrate against a Placebo in the Treatment of Angina Pectoris
Br Med J 1973; 1 :375
doi:10.1136/bmj.1.5850.375