@misc{indiciaee06ca720cc0c,
  title = {A potential pitfall in studying trait-discordant twins.},
  author = {G D Friedman},
  year = {1977},
  doi = {10.1093/oxfordjournals.aje.a112385},
  url = {https://pubmed.ncbi.nlm.nih.gov/848478/},
  note = {Source identifier: 848478}
}