@misc{indiciaec920ffb66dbe,
  title = {Review of early pacemaker development.},
  author = {R Elmqvist},
  year = {1978},
  doi = {10.1111/j.1540-8159.1978.tb03518.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/95649/},
  note = {Source identifier: 95649}
}