@misc{indiciaed173c796b010,
  title = {How accurate is second trimester fetal dating?},
  author = {F P Hadlock and R B Harrist and J Martinez-Poyer},
  year = {1991},
  doi = {10.7863/jum.1991.10.10.557},
  url = {https://pubmed.ncbi.nlm.nih.gov/1942221/},
  note = {Source identifier: 1942221}
}