@misc{indiciaed160c71cab4e,
  title = {The vanishing twin.},
  author = {H J Landy and L Keith and D Keith},
  year = {1982},
  doi = {10.1017/s0001566000008278},
  url = {https://pubmed.ncbi.nlm.nih.gov/7170918/},
  note = {Source identifier: 7170918}
}