@misc{indiciaee6897900ec67,
  title = {Postcoital contraception.},
  author = {J Porter and W Jones},
  year = {1981},
  doi = {10.5694/j.1326-5377.1981.tb135322.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/7231250/},
  note = {Source identifier: 7231250}
}