TY  - RPRT
TI  - Quantitative echo contrast concentration measurement by Doppler sonography.
AU  - K Q Schwarz
AU  - G P Bezante
AU  - X Chen
AU  - R Schlief
PY  - 1993
DO  - 10.1016/0301-5629(93)90101-s
UR  - https://pubmed.ncbi.nlm.nih.gov/8346603/
ID  - 8346603
ER  -