@misc{indiciaef40d84cf9e5f,
  title = {Menstrual changes associated with progestogen-only contraception.},
  author = {I S Fraser},
  year = {1986},
  doi = {10.3109/00016348609157048},
  url = {https://pubmed.ncbi.nlm.nih.gov/2949480/},
  note = {Source identifier: 2949480}
}