@misc{indiciae02f2aec7647a,
  title = {Endoscopy in acute upper gastrointestinal bleeding.},
  author = {D KATZ and E FRIEDMAN and S SELESNICK},
  year = {1958},
  doi = {10.1007/bf02231365},
  url = {https://pubmed.ncbi.nlm.nih.gov/13582917/},
  note = {Source identifier: 13582917}
}