@misc{indiciae9a0c3f4b7ff0,
  title = {Twinning rates.},
  author = {M Murphy and K Hey},
  year = {1997},
  doi = {10.1016/s0140-6736(05)63241-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/9149727/},
  note = {Source identifier: 9149727}
}