@misc{indiciae11d47fe97ffc,
  title = {Life graphs: aging and cohort effect.},
  author = {K W Back and L B Bourque},
  year = {1970},
  doi = {10.1093/geronj/25.3.249},
  url = {https://pubmed.ncbi.nlm.nih.gov/4916800/},
  note = {Source identifier: 4916800}
}