@misc{indiciae0e6b98bcb2ed,
  title = {Upper gastrointestinal endoscopy--a GP service.},
  author = {J A Fisher and J G Surridge and C P Vartan and C A Loehry},
  year = {1977},
  doi = {10.1136/bmj.2.6096.1199},
  url = {https://pubmed.ncbi.nlm.nih.gov/589088/},
  note = {Source identifier: 589088}
}