@misc{indiciae100522677ccf,
  title = {Experience with the Siemens-Elema Variopacemaker.},
  author = {R Shanahan},
  year = {1978},
  doi = {10.1177/000331977802900602},
  url = {https://pubmed.ncbi.nlm.nih.gov/686476/},
  note = {Source identifier: 686476}
}