@misc{indiciae9d309e7a8708,
  title = {Age and the rigidities.},
  author = {S M CHOWN},
  year = {1961},
  doi = {10.1093/geronj/16.4.353},
  url = {https://pubmed.ncbi.nlm.nih.gov/13879236/},
  note = {Source identifier: 13879236}
}