@misc{indiciaeaec69f721195,
  title = {Upper gastrointestinal endoscopy: current status.},
  author = {John D Mellinger},
  year = {2003},
  doi = {10.1177/107155170301000103},
  url = {https://pubmed.ncbi.nlm.nih.gov/12695804/},
  note = {Source identifier: 12695804}
}