TY  - RPRT
TI  - Methodological variation and agreement in assessing mitral valve orifice area by echo-Doppler methods in mitral stenosis.
AU  - J C Mohan
AU  - R Chawla
AU  - R Arora
UR  - https://pubmed.ncbi.nlm.nih.gov/9062012/
ID  - 9062012
ER  -