TY - GEN AU - Chatterjee,K TI - Letter: Mean normalized systolic ejection rates SN - 0009-7322 PY - 1975///0218 KW - Heart KW - physiopathology KW - Heart Diseases KW - Heart Function Tests KW - methods KW - Humans N1 - Publication Type: Journal Article UR - https://doi.org/10.1161/01.cir.50.6.1282-a ER -