@misc{indiciae21f9c3034c5e,
  title = {Twin pregnancy.},
  author = {H B Al-Kouatly and D W Skupski},
  year = {1999},
  doi = {10.1097/00001703-199904000-00004},
  url = {https://pubmed.ncbi.nlm.nih.gov/10219913/},
  note = {Source identifier: 10219913}
}