@misc{indiciaeb02643a0a249,
  title = {[Contraceptive efficiency. Reflections on statistical evaluation and real value].},
  author = {M A Lagroua Weill-halle},
  year = {1975},
  url = {https://pubmed.ncbi.nlm.nih.gov/12258789/},
  note = {Source identifier: 12258789}
}