@misc{indiciae3809d273aca6,
  title = {Heart rate variability.},
  author = {Ronald S Brown},
  year = {2005},
  doi = {10.14219/jada.archive.2005.0151},
  url = {https://pubmed.ncbi.nlm.nih.gov/15819338/},
  note = {Source identifier: 15819338}
}