@misc{indiciae131fef70c26c,
  title = {Quantifying electrocardiogram RT-RR variability interactions.},
  author = {A Porta and G Baselli and E Caiani and A Malliani and F Lombardi and S Cerutti},
  year = {1998},
  doi = {10.1007/bf02522854},
  url = {https://pubmed.ncbi.nlm.nih.gov/9614745/},
  note = {Source identifier: 9614745}
}