TY  - RPRT
TI  - Multiple-lead electrocardiograms.
AU  - I G W HILL
PY  - 1950
DO  - 10.1016/s0140-6736(50)90866-x
UR  - https://pubmed.ncbi.nlm.nih.gov/15422810/
ID  - 15422810
ER  -