@misc{indiciaefdecf1096a3c,
  title = {Mammographic density changes during the menstrual cycle.},
  author = {G Ursin and Y R Parisky and M C Pike and D V Spicer},
  year = {2001},
  url = {https://pubmed.ncbi.nlm.nih.gov/11219771/},
  note = {Source identifier: 11219771}
}