@misc{indiciae17af1740d994,
  title = {Letter: Monoamniotic twins.},
  author = {K Chapman},
  year = {1974},
  doi = {10.1016/s0140-6736(74)90119-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/4140375/},
  note = {Source identifier: 4140375}
}