@misc{indiciae1adec3c3a7cd,
  title = {The cardiac pacemaker: a different twist.},
  author = {C J Tegtmeyer and J M Deignan},
  year = {1976},
  doi = {10.2214/ajr.126.5.1017},
  url = {https://pubmed.ncbi.nlm.nih.gov/178221/},
  note = {Source identifier: 178221}
}