@misc{indiciaead84a602f773,
  title = {Pacemaker in a centenarian.},
  author = {J Grayzel},
  year = {1971},
  doi = {10.1001/jama.1971.03190140069019},
  url = {https://pubmed.ncbi.nlm.nih.gov/5109927/},
  note = {Source identifier: 5109927}
}