TY  - RPRT
TI  - Left ventricular wall motion assessed by using fixed external reference systems.
AU  - B R Chaitman
AU  - J D Bristow
AU  - S H Rahimtoola
PY  - 1973
DO  - 10.1161/01.cir.48.5.1043
UR  - https://pubmed.ncbi.nlm.nih.gov/4270891/
ID  - 4270891
ER  -