@misc{indiciaefe0ced02d077,
  title = {Surrogacy--a case for normalization.},
  author = {J Callman},
  year = {1999},
  doi = {10.1093/humrep/14.2.277},
  url = {https://pubmed.ncbi.nlm.nih.gov/10099962/},
  note = {Source identifier: 10099962}
}