@misc{indiciaea36797633c8d,
  title = {Chronic symptomatic sinus bradycardia treated with a permanent demand pacemaker.},
  author = {D K Chung and E K Chung},
  year = {1971},
  url = {https://pubmed.ncbi.nlm.nih.gov/5284434/},
  note = {Source identifier: 5284434}
}