@misc{indiciae9f3a57d7a85e,
  title = {Haematemesis and melaena--a permanent problem.},
  year = {1977},
  doi = {10.1136/bmj.1.6067.989},
  url = {https://pubmed.ncbi.nlm.nih.gov/851843/},
  note = {Source identifier: 851843}
}