TY  - GEN
AU  - Spodick,D H
TI  - Exercise testing
SN  - 0009-7322
PY  - 1977///0729
KW  - Electrocardiography
KW  - methods
KW  - Exercise Test
KW  - Humans
N1  - Publication Type: Letter
UR  - https://doi.org/10.1161/01.cir.56.1.137
ER  -