@misc{indiciae3691c8b6faf8,
  title = {An implantable demand pacemaker.},
  author = {L I Zaroff and B V Berkovits and W Zuckerman and D E Harken},
  year = {1967},
  doi = {10.1016/s0003-4975(10)66271-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/6050836/},
  note = {Source identifier: 6050836}
}