TY  - RPRT
TI  - Reproducibility of supine exercise testing.
AU  - M Appel
AU  - D Blumfield
PY  - 1981
DO  - 10.1161/01.cir.63.2.469
UR  - https://pubmed.ncbi.nlm.nih.gov/7449071/
ID  - 7449071
ER  -