Burian, W Normal electrocardiogram in severe angina pectoris requiring coronary venous bypass graft. [electronic resource] - British heart journal May 1973 - 552 p. digital Publication Type: Journal Article ISSN: 0007-0769 Subjects--Topical Terms: AdultAngina Pectoris--diagnosisCoronary AngiographyCoronary Artery BypassElectrocardiographyFemaleHumansMaleMiddle Aged