@misc{indiciae3ff73e67ddf5,
  title = {The sick sinus syndrome.},
  author = {M I Ferrer},
  year = {1980},
  doi = {10.1080/21548331.1980.11946684},
  url = {https://pubmed.ncbi.nlm.nih.gov/7439913/},
  note = {Source identifier: 7439913}
}