@misc{indiciae5f3db88109e4,
  title = {Pacemaker arrhythmias in context.},
  author = {A Castellanos and M Spence},
  year = {1970},
  doi = {10.1016/s0002-9149(70)80019-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/5443917/},
  note = {Source identifier: 5443917}
}