@misc{indiciaef521e63b0038,
  title = {Perforated gastric ulcer.},
  author = {J R Rees and B Thorbjarnarson},
  year = {1973},
  doi = {10.1016/s0002-9610(73)80102-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/4541385/},
  note = {Source identifier: 4541385}
}