@misc{indiciae3052b39dfcdb,
  title = {Differences in heart rate variability between young and elderly normal men during graded head up tilt.},
  author = {J Akatsu and M Kumashiro and S Miyake and N Komine and Y Takahashi and M Hashimoto and H Togami and K Inoue},
  year = {1999},
  doi = {10.2486/indhealth.37.68},
  url = {https://pubmed.ncbi.nlm.nih.gov/10052302/},
  note = {Source identifier: 10052302}
}