@misc{indiciaec1994cf47c32,
  title = {A study of chronic heart block using His bundle electrograms.},
  author = {R D Patton and R A Heinle},
  year = {1971},
  doi = {10.1016/s0022-0736(71)80046-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/5556297/},
  note = {Source identifier: 5556297}
}