@misc{indiciae4b0f682169e0,
  title = {Normal sinus heart rate redefined.},
  author = {D H Spodick},
  year = {1993},
  doi = {10.1093/eurheartj/14.7.865},
  url = {https://pubmed.ncbi.nlm.nih.gov/8375407/},
  note = {Source identifier: 8375407}
}