@misc{indiciaee7dc9d9f72e8,
  title = {APACHE II in emergency operations for perforated ulcers.},
  author = {M Schein and G Gecelter and Z Freinkel and H Gerding},
  year = {1990},
  doi = {10.1016/s0002-9610(05)81225-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/2305938/},
  note = {Source identifier: 2305938}
}