TY  - RPRT
TI  - Low Gradient, Low Ejection Fraction Aortic Stenosis.
AU  - John Chambers
PY  - 2003
DO  - 10.1007/s11936-003-0036-6
UR  - https://pubmed.ncbi.nlm.nih.gov/14575624/
ID  - 14575624
ER  -