@misc{indiciae10c3fdad542b,
  title = {First trimester abdominal pregnancy.},
  author = {M F Graham},
  year = {1977},
  doi = {10.1002/jcu.1870050507},
  url = {https://pubmed.ncbi.nlm.nih.gov/410836/},
  note = {Source identifier: 410836}
}