@misc{indiciae64574ff0c86e,
  title = {Preventing unwanted pregnancies.},
  author = {J F Pearson},
  year = {1991},
  doi = {10.1136/bmj.303.6803.598},
  url = {https://pubmed.ncbi.nlm.nih.gov/1932899/},
  note = {Source identifier: 1932899}
}