@misc{indiciae9dc85d1c62d5,
  title = {Pacemaker sound and programmability.},
  author = {M A Famularo and R Redd and J C Messenger},
  year = {1983},
  doi = {10.1016/0002-8703(83)90061-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/6650371/},
  note = {Source identifier: 6650371}
}