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
The critically ill premature infant with patent ductus arteriosus and pulmonary disease—an echocardiographic assessmentRichard E. Behrman, Joan Korfhagen, Barry G. Baylen et al.|The Journal of Pediatrics|1975Cited by 72
Left ventricular performance in the critically ill premature infant with patent ductus arteriosus and pulmonary disease.Barry G. Baylen, Samuel Kaplan, Richard A. Meyer et al.|Circulation|1977Cited by 71
Long-term follow-up study after closure of secundum atrial septal defect in children: An echocardiographic studyRichard A. Meyer, Samuel Kaplan, Joan Korfhagen et al.|The American Journal of Cardiology|1982Cited by 48
Mitral and tricuspid valve closure in congenital heart disease.S Milner, Samuel Kaplan, A. W. Venables et al.|Circulation|1976Cited by 28