@misc{indiciaea10d851ceb46,
  title = {Monochorionic twinning: sonographic assessment.},
  author = {R A Filly and R B Goldstein and P W Callen},
  year = {1990},
  doi = {10.2214/ajr.154.3.2106205},
  url = {https://pubmed.ncbi.nlm.nih.gov/2106205/},
  note = {Source identifier: 2106205}
}