@misc{indiciaeb780b0a66dcb,
  title = {Menstruation during pregnancy.},
  author = {H Sato and K Yamane},
  year = {1971},
  doi = {10.1016/s0140-6736(71)90800-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/4099236/},
  note = {Source identifier: 4099236}
}