@misc{indiciae9e69d64af32f,
  title = {Second-degree atrioventricular block.},
  author = {D P Zipes},
  year = {1979},
  doi = {10.1161/01.cir.60.3.465},
  url = {https://pubmed.ncbi.nlm.nih.gov/378457/},
  note = {Source identifier: 378457}
}