TY  - RPRT
TI  - Left ventricular ejection fraction measured with Doppler color flow mapping techniques.
AU  - A R Bengur
AU  - A R Snider
AU  - R P Vermilion
AU  - J C Freeland
PY  - 1991
DO  - 10.1016/0002-9149(91)90362-o
UR  - https://pubmed.ncbi.nlm.nih.gov/1877485/
ID  - 1877485
ER  -