TY  - RPRT
TI  - Echocardiography and left ventricular function.
AU  - C M Cottrill
PY  - 1990
DO  - 10.1111/j.2042-3306.1990.tb04297.x
UR  - https://pubmed.ncbi.nlm.nih.gov/2269257/
ID  - 2269257
ER  -