@misc{indiciaefe70a1a80e1e,
  title = {Guidelines for contraception.},
  author = {A K Thomas},
  year = {1981},
  doi = {10.5694/j.1326-5377.1981.tb100868.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/7289952/},
  note = {Source identifier: 7289952}
}