@misc{indiciae14522e27a4be,
  title = {All dual-chamber pacemakers function in the DDD mode.},
  author = {S S Barold and M D Falkoff and L S Ong and R A Heinle},
  year = {1988},
  doi = {10.1016/0002-8703(88)90058-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/3376867/},
  note = {Source identifier: 3376867}
}