@misc{indiciaecdfbad99c1e6,
  title = {Midtrimester placenta previa: normal or pathologic finding.},
  author = {S Ballas and S Gitstein and A J Jaffa and M R Peyser},
  year = {1979},
  doi = {10.1097/00006250-197907000-00003},
  url = {https://pubmed.ncbi.nlm.nih.gov/450354/},
  note = {Source identifier: 450354}
}