@misc{indiciae618e11956f6f,
  title = {[Intrauterine contraception with Lippes' loop].},
  author = {P A Gjorup and E Guttorm},
  year = {1967},
  url = {https://pubmed.ncbi.nlm.nih.gov/5584963/},
  note = {Source identifier: 5584963}
}