@misc{indiciaedf72ef6b9da7,
  title = {Statistical fluctuations in heart rate variability indices.},
  author = {J S Detwiler and W Jarisch and S N Caritis},
  year = {1980},
  doi = {10.1016/0002-9378(80)90605-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/7352507/},
  note = {Source identifier: 7352507}
}