@misc{indiciae5838c03617af,
  title = {Contraception and infertility.},
  author = {K L Oldershaw and M Brudenell},
  year = {1972},
  doi = {10.1136/bmj.4.5834.233-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/5082565/},
  note = {Source identifier: 5082565}
}