The echocardiographic assessment of pulmonary artery pressure and pulmonary vascular resistance.Stephen S. Hirschfeld, Samuel Kaplan, J Kofhagen et al.|Circulation|1975Cited by 193
Measurement of right and left ventricular systolic time intervals by echocardiography.Stephen S. Hirschfeld, Samuel Kaplan, Richard A. Meyer et al.|Circulation|1975Cited by 171
Sensitivity, specificity and predictive value of two-dimensional echocardiography in detecting coronary artery aneurysms in patients with kawasaki diseaseThomas E. Capannari, Samuel Kaplan, David C. Schwartz et al.|Journal of the American College of Cardiology|1986Cited by 135
Ventricular septum in right ventricular volume overloadRichard A. Meyer, Samuel Kaplan, George Benzing et al.|The American Journal of Cardiology|1972Cited by 129
Efficacy of intraoperative transesophageal echocardiography in children with congenital heart diseaseStephen E. Cyran, Samuel Kaplan, William F. Balisteri et al.|The American Journal of Cardiology|1989Cited by 99