@misc{indiciae9394aa01d2ec,
  title = {When to remove the I.U.D.},
  author = {M Pollock},
  year = {1971},
  doi = {10.1016/s0140-6736(71)90655-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/4143579/},
  note = {Source identifier: 4143579}
}