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Pediatrics|September 1, 1978
Echographic ventricular systolic time intervals in normal term and preterm neonatesH Halliday, S Hirschfeld, T Riggs, et al.Pediatrics|October 1, 1977
Respiratory distress syndrome: echocardiographic assessment of cardiovascular function and pulmonary vascular resistanceH Halliday, S Hirschfeld, T Riggs, et al.Pediatrics|March 1, 1977
Neonatal circulatory changes: an echocardiographic studyT Riggs, S Hirschfeld, C Bormuth, et al.The Journal of Pediatrics|October 1, 1977
Persistence of fetal circulation syndrome: an echocardiographic studyT Riggs, S Hirschfeld, A Fanaroff, et al.Circulation|May 1, 1979
Echocardiographic estimation of ventricular hypoplasia in complete atrioventricular canalS Mehta, S Hirschfeld, T Riggs, et al.The American Journal of Cardiology|September 1, 1979
Echocardiographic assessment of the adequacy of pulmonary arterial bandingE J Garcia, T Riggs, S Hirschfeld, et al.Circulation|May 1, 1978
Assessment of the pulmonary vascular bed by echocardiographic right ventricular systolic time intervalsT Riggs, S Hirschfeld, G Borkat, et al.Circulation|February 1, 1979
Ventricular septal defect in infancy: a combined vectorgraphic and echocardiographic studyT Riggs, S Mehta, S Hirschfeld, et al.Journal of Electrocardiology|January 1, 1981
Respiratory variation in Frank vectorcardiography and echocardiography in childrenA Raviele, T Riggs, E Garcia, et al.American Heart Journal|March 1, 1980
The pediatric spectrum of dynamic left ventricular obstructionT Riggs, S Hirschfeld, H RajaiPageof 33