TY  - RPRT
TI  - Normal electrocardiographic waveform characteristics during treadmill exercise testing.
AU  - R A Wolthuis
AU  - V F Froelicher
AU  - A Hopkirk
AU  - J R Fischer
AU  - N Keiser
PY  - 1979
DO  - 10.1161/01.cir.60.5.1028
UR  - https://pubmed.ncbi.nlm.nih.gov/487536/
ID  - 487536
ER  -