@misc{indiciae782e779752b4,
  title = {First degree atrioventricular block.},
  author = {S Sornsin},
  year = {1987},
  doi = {10.1016/0736-4679(87)90007-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/3584915/},
  note = {Source identifier: 3584915}
}