@misc{indiciaee2f32abb4c55,
  title = {Upper gastrointestinal bleeding in the critically ill.},
  author = {R G Karlstadt and D Hedrich and R Palmer},
  year = {1993},
  doi = {10.1016/0016-5085(93)90686-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/8347213/},
  note = {Source identifier: 8347213}
}