@misc{indiciae0d9a3ea4d61c,
  title = {Perforated peptic ulcer.},
  author = {S S Chung and A K Li},
  year = {1989},
  doi = {10.1002/bjs.1800761039},
  url = {https://pubmed.ncbi.nlm.nih.gov/2597958/},
  note = {Source identifier: 2597958}
}