@misc{indiciaec60e57eff65b,
  title = {Preventing unplanned pregnancies.},
  author = {C Hawken},
  year = {1978},
  doi = {10.5694/j.1326-5377.1978.tb107899.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/661707/},
  note = {Source identifier: 661707}
}