The use of noninvasive methods in the evaluation of left ventricular performance in coronary artery disease. I. Relation of systolic time intervals to angiographic assessment of coronary artery disease severity.
The use of noninvasive methods in the evaluation of left ventricular performance in coronary artery disease. I. Relation of systolic time intervals to angiographic assessment of coronary artery disease severity. Am Heart J. 1975 Aug; 90(2):134-44.