@misc{indiciaeb0e20bf5c4d6,
  title = {Development of computerized storage facilities for twin data: a relational database system for a twin register.},
  author = {A M Macdonald and S A Hamer},
  year = {1997},
  doi = {10.1023/a:1025655023496},
  url = {https://pubmed.ncbi.nlm.nih.gov/9145539/},
  note = {Source identifier: 9145539}
}