@misc{indiciaeddfd31a33260,
  title = {P wave synchronous pacing using anchored atrial electrode implanted without thoracotomy.},
  author = {W Porstmann and J Witte and L Dressler and M Schaldach and I Vogel and H Warnke},
  year = {1972},
  doi = {10.1016/0002-9149(72)90128-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/5035576/},
  note = {Source identifier: 5035576}
}