@misc{indiciae285a27d7ea95,
  title = {A substitute gastroscope.},
  author = {H E Houston},
  year = {1975},
  doi = {10.1016/s0016-5107(75)73849-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/1140544/},
  note = {Source identifier: 1140544}
}