@misc{indiciae093c7ac1bd9c,
  title = {Cardiorespiratory effects during gastrointestinal endoscopy.},
  author = {R Block and J Jankowski and J Colvin},
  year = {1991},
  doi = {10.1111/j.1365-2044.1991.tb09736.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/1741860/},
  note = {Source identifier: 1741860}
}