TY  - RPRT
TI  - Exercise testing: improving performance with a ramped Bruce protocol.
AU  - P M Will
AU  - J D Walter
PY  - 1999
DO  - 10.1016/s0002-8703(99)70067-0
UR  - https://pubmed.ncbi.nlm.nih.gov/10577432/
ID  - 10577432
ER  -