Comparative accuracy of apical biplane cross-sectional echocardiography and gated equilibrium radionuclide angiography for estimating left ventricular size and performance.

Circulation
1981
https://researcherprofiles.org/profile/1286640
7471367
Starling MR, Crawford MH, Sorensen SG, Levi B, Richards KL, O'Rourke RA