@misc{indiciae442c5bc97565,
  title = {The sick sinus and ailing atrium.},
  author = {M M Scheinman and R Peters and D S Hirschfeld and J A Abbott and F Kunkel},
  year = {1974},
  url = {https://pubmed.ncbi.nlm.nih.gov/4613008/},
  note = {Source identifier: 4613008}
}