@misc{indiciaee1bb7fa802e0,
  title = {Upper gastrointestinal bleeding.},
  author = {J N Crook and L W Gray and F C Nance and I Cohn},
  year = {1972},
  doi = {10.1097/00000658-197205000-00017},
  url = {https://pubmed.ncbi.nlm.nih.gov/4537327/},
  note = {Source identifier: 4537327}
}