@misc{indiciaed9bce2201947,
  title = {Endoscopy. What is its role in upper GI bleeding?},
  author = {H P Roth},
  year = {1981},
  doi = {10.1007/bf01300798},
  url = {https://pubmed.ncbi.nlm.nih.gov/6985333/},
  note = {Source identifier: 6985333}
}