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Chest|January 1, 1981
Reproducibility of echocardiography. A study evaluating the variability of serial echocardiographic measurementsD A Pietro, A G Voelkel, B J Ray, et al.
Circulation|November 1, 1978
Echocardiographic features of constrictive pericarditisA G Voelkel, D A Pietro, E D Folland, et al.
Chest|February 1, 1980
Noninvasive tests to evaluate the severity of aortic stenosis. Limitations and reliabilityA G Voelkel, M Kendrick, D A Pietro, et al.
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