@misc{indiciae81c48f1523f9,
  title = {Twins behaving badly.},
  author = {J J Harding},
  year = {1997},
  doi = {10.1016/s0140-6736(05)62066-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/9310622/},
  note = {Source identifier: 9310622}
}