@misc{indiciae0944158b8cd2,
  title = {The progestogen-only pill.},
  author = {P W Howie},
  year = {1985},
  doi = {10.1111/j.1471-0528.1985.tb02993.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/3840384/},
  note = {Source identifier: 3840384}
}