@misc{indiciae9c9ada1fad12,
  title = {Normal sinus rhythm.},
  author = {M Dolgin},
  year = {1993},
  doi = {10.1016/0002-9149(93)90479-v},
  url = {https://pubmed.ncbi.nlm.nih.gov/8430659/},
  note = {Source identifier: 8430659}
}