@misc{indiciae4ed342ddca99,
  title = {The important first trimester: an educational approach.},
  author = {C S Cranston},
  doi = {10.1016/0091-2182(80)90182-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/6900671/},
  note = {Source identifier: 6900671}
}