@misc{indiciae91cf3059a1e6,
  title = {Long-term intracervical contraception with a levonorgestrel device.},
  author = {S El Mahgoub},
  year = {1982},
  doi = {10.1016/0010-7824(82)90093-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/6809421/},
  note = {Source identifier: 6809421}
}