TY - GEN AU - Luisada,A A AU - Craige,E TI - Letter: Heart sounds by echo SN - 0009-7322 PY - 1976///1001 KW - Echocardiography KW - Heart Auscultation KW - Heart Block KW - physiopathology KW - Heart Sounds KW - Heart Valves KW - Humans N1 - Publication Type: Journal Article UR - https://doi.org/10.1161/01.cir.54.3.526 ER -