PT - JOURNAL ARTICLE AU - Ernesto E. Salcedo AU - Augusto Pichard AU - Wayne Siegel TI - Evaluation of left ventricular function by cardiac catheterization, echocardiography, and systolic time intervals DP - 1976 Sep 21 TA - Cleveland Clinic Journal of Medicine PG - 151--162 VI - 43 IP - 3 4099 - http://www.ccjm.org/content/43/3/151.short 4100 - http://www.ccjm.org/content/43/3/151.full SO - Cleve Clin J Med1976 Sep 21; 43