@misc{indiciae107ee8119113,
  title = {Perforated ulcer in the elderly.},
  author = {M R Jacyna and A N Shepherd},
  year = {1985},
  doi = {10.1016/s0140-6736(85)91595-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/2866375/},
  note = {Source identifier: 2866375}
}