@misc{indiciae387ba25b2bd6,
  title = {The safe period.},
  author = {H P DUNN},
  year = {1956},
  doi = {10.1016/s0140-6736(56)91919-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/13358238/},
  note = {Source identifier: 13358238}
}