@misc{indiciaefe9020474e46,
  title = {First trimester conceptus.},
  author = {A F Tarantal and A G Hendrickx and R O'Rahilly},
  year = {1990},
  doi = {10.7863/jum.1990.9.10.614},
  url = {https://pubmed.ncbi.nlm.nih.gov/2231863/},
  note = {Source identifier: 2231863}
}