@misc{indiciaead01a37180d8,
  title = {Retrograde conduction in complete heart block.},
  author = {C Castillo and P Samet},
  year = {1967},
  doi = {10.1136/hrt.29.4.553},
  url = {https://pubmed.ncbi.nlm.nih.gov/6029126/},
  note = {Source identifier: 6029126}
}