@misc{indiciae939824989b3e,
  title = {Can a demand pacemaker really sense concealed ventricular extrasystoles?},
  author = {S S Barold},
  year = {1981},
  doi = {10.1111/j.1540-8159.1981.tb06548.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/6167950/},
  note = {Source identifier: 6167950}
}