@misc{indiciae4d2ed6acfcaa,
  title = {Etopic pregnancy causing massive rectal bleeding.},
  author = {S P Patterson and C E Frankum and H Sexton},
  year = {1978},
  doi = {10.1097/00007611-197811000-00045},
  url = {https://pubmed.ncbi.nlm.nih.gov/309659/},
  note = {Source identifier: 309659}
}