@misc{indiciaedec7b90ad8ec,
  title = {H-V intervals in LBBB.},
  author = {A Castellanos},
  year = {1973},
  doi = {10.1161/01.cir.47.5.1133-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/4705576/},
  note = {Source identifier: 4705576}
}