TY  - RPRT
TI  - Real-time two-dimensional Doppler echocardiographic flow mapping.
AU  - D J Sahn
PY  - 1985
DO  - 10.1161/01.cir.71.5.849
UR  - https://pubmed.ncbi.nlm.nih.gov/3886187/
ID  - 3886187
ER  -