@misc{indiciae999a4d60f084,
  title = {Age-specific secular changes in oral contraceptive use.},
  author = {S Shapiro and D Slone and E R Neff},
  year = {1981},
  doi = {10.1093/oxfordjournals.aje.a113226},
  url = {https://pubmed.ncbi.nlm.nih.gov/7304590/},
  note = {Source identifier: 7304590}
}