@misc{indiciae60c20f3f5f8f,
  title = {Conjoined twins--a genealogical study.},
  author = {G B Callahan and R C Mitchell},
  doi = {10.1017/s1120962300025488},
  url = {https://pubmed.ncbi.nlm.nih.gov/5502025/},
  note = {Source identifier: 5502025}
}