@misc{indiciaec724c2c44517,
  title = {Life expectancy increases, but the life span is fixed.},
  author = {J F Fries},
  year = {1982},
  doi = {10.2105/ajph.72.1.91},
  url = {https://pubmed.ncbi.nlm.nih.gov/7053629/},
  note = {Source identifier: 7053629}
}