@misc{indiciae77f1eadf5fac,
  title = {Experience with Devices implanted fixed-rate pacemakers.},
  author = {H Siddons and G Davies},
  year = {1973},
  doi = {10.1136/thx.28.2.177},
  url = {https://pubmed.ncbi.nlm.nih.gov/4731109/},
  note = {Source identifier: 4731109}
}