@misc{indiciae184694cecc50,
  title = {Pacemaker diagnostic diagrams.},
  author = {W H Olson and M V McConnell and R L Sah and R C Beck and R Sutton},
  year = {1985},
  doi = {10.1111/j.1540-8159.1985.tb05882.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/2414751/},
  note = {Source identifier: 2414751}
}