@misc{indiciaeab0572c41822,
  title = {A three-year clinical trial with levonorgestrel silastic implants.},
  author = {S Diaz and M Pavez and D N Robertson and H B Croxatto},
  year = {1979},
  doi = {10.1016/0010-7824(79)90004-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/385243/},
  note = {Source identifier: 385243}
}