@misc{indiciaeb797090ccd7d,
  title = {Nitrous oxide for colonoscopy: a randomized controlled study.},
  author = {G M Forbes and B J Collins},
  year = {2000},
  doi = {10.1016/s0016-5107(00)70354-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/10699770/},
  note = {Source identifier: 10699770}
}