TY  - RPRT
TI  - Rate responsive pacing and exercise capacity--a comment.
AU  - R Nordlander
AU  - A Hedman
AU  - S K Pehrsson
PY  - 1989
DO  - 10.1111/j.1540-8159.1989.tb01895.x
UR  - https://pubmed.ncbi.nlm.nih.gov/2471159/
ID  - 2471159
ER  -