TY  - RPRT
TI  - Echocardiography.
AU  - J B Chambers
AU  - M J Monaghan
AU  - G Jackson
PY  - 1988
DO  - 10.1136/bmj.297.6656.1071
UR  - https://pubmed.ncbi.nlm.nih.gov/3143434/
ID  - 3143434
ER  -