@misc{indiciae757cb35d335c,
  title = {Opioids and obstetrics.},
  author = {E A Ricciarelli and B B Gutsche and T C Smith},
  year = {1974},
  doi = {10.1097/00003081-197406000-00016},
  url = {https://pubmed.ncbi.nlm.nih.gov/4846095/},
  note = {Source identifier: 4846095}
}