@misc{indiciae58bca61eef16,
  title = {Twin methodology is not always easily understood.},
  author = {K O Kyvik},
  year = {1996},
  doi = {10.1136/bmj.313.7055.491a},
  url = {https://pubmed.ncbi.nlm.nih.gov/8776329/},
  note = {Source identifier: 8776329}
}