@misc{indiciaeeac7437a5913,
  title = {Follow-up after sterilisation.},
  author = {G F Williams},
  year = {1968},
  doi = {10.1016/s0140-6736(68)91999-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/4173008/},
  note = {Source identifier: 4173008}
}