@misc{indiciae2014416f6e97,
  title = {Upper gastrointestinal endoscopy in the aged.},
  author = {M O'Neill and M Hyland and M J Whelton},
  year = {1975},
  url = {https://pubmed.ncbi.nlm.nih.gov/1052486/},
  note = {Source identifier: 1052486}
}