@misc{indiciaee742d7050b15,
  title = {Gastrointestinal bleeding: what progress?},
  year = {1970},
  doi = {10.1016/s0140-6736(70)91223-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/4192104/},
  note = {Source identifier: 4192104}
}