@misc{indiciaec810948474c3,
  title = {Early contraceptive sheaths.},
  author = {E J DINGWALL},
  year = {1953},
  doi = {10.1136/bmj.1.4800.40},
  url = {https://pubmed.ncbi.nlm.nih.gov/12997834/},
  note = {Source identifier: 12997834}
}