TY  - RPRT
TI  - Variation in Doppler-derived stenotic aortic valve area during ejection.
AU  - T R Lloyd
PY  - 1992
DO  - 10.1016/0002-8703(92)90628-9
UR  - https://pubmed.ncbi.nlm.nih.gov/1636603/
ID  - 1636603
ER  -