@misc{indiciaee56782b0e481,
  title = {Cardiovascular autonomic function testing: an automated method for measuring heart rate variation.},
  author = {I A O'Brien and R J Corrall},
  year = {1985},
  doi = {10.1111/j.1464-5491.1985.tb00620.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/2952401/},
  note = {Source identifier: 2952401}
}