@misc{indiciaebb89d1b44d96,
  title = {Activity in advancing years.},
  author = {M W WARREN},
  year = {1950},
  doi = {10.1136/bmj.2.4685.921},
  url = {https://pubmed.ncbi.nlm.nih.gov/14772519/},
  note = {Source identifier: 14772519}
}