@misc{indiciaed89faf6b8650,
  title = {External human fertilization.},
  author = {C Grobstein},
  year = {1979},
  doi = {10.1038/scientificamerican0679-57},
  url = {https://pubmed.ncbi.nlm.nih.gov/472706/},
  note = {Source identifier: 472706}
}