@misc{indiciae99a2f4bab951,
  title = {Drift in pacemakers.},
  author = {F Hepburn},
  year = {1977},
  doi = {10.1016/s0140-6736(77)90770-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/71642/},
  note = {Source identifier: 71642}
}