@misc{indiciaea41d61a8ee37,
  title = {Current trends in contraception.},
  author = {J J Frey},
  year = {1979},
  doi = {10.1136/bmj.2.6194.866-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/509141/},
  note = {Source identifier: 509141}
}