@misc{indiciaea1eb6b13defe,
  title = {The relationship between exercise-induced R wave amplitude changes and QRS vector loops.},
  author = {K Watanabe and V Bhargava and V F Froelicher},
  year = {1981},
  doi = {10.1016/s0022-0736(81)80047-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/7276781/},
  note = {Source identifier: 7276781}
}