@misc{indiciaed9d235448037,
  title = {[Allowable duration for using intrauterine polyethylene contraceptives].},
  author = {Iu A Petrov and E A Kovaleva and T A Petrova},
  year = {1986},
  url = {https://pubmed.ncbi.nlm.nih.gov/2945459/},
  note = {Source identifier: 2945459}
}