@misc{indiciae497224005603,
  title = {The string test for upper gastrointestinal bleeding--a new, plastic look.},
  author = {C F Johnson},
  year = {1967},
  doi = {10.7326/0003-4819-67-5-1115},
  url = {https://pubmed.ncbi.nlm.nih.gov/5299013/},
  note = {Source identifier: 5299013}
}