TY  - RPRT
TI  - A 12-lead patient cable for electrocardiographic exercise testing.
AU  - I M Grais
AU  - D E Campbell
AU  - R J Adolph
PY  - 1974
DO  - 10.1016/0002-8703(74)90042-8
UR  - https://pubmed.ncbi.nlm.nih.gov/4809772/
ID  - 4809772
ER  -