@misc{indiciae5c8978de3577,
  title = {R-R variations, a test of autonomic dysfunction.},
  author = {A Persson and G Solders},
  year = {1983},
  doi = {10.1111/j.1600-0404.1983.tb04577.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/6880606/},
  note = {Source identifier: 6880606}
}