@misc{indiciaeb2a7407800ae,
  title = {Patient positioning during colonoscopy.},
  author = {J L Herrera},
  doi = {10.1016/s0016-5107(91)70891-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/1756937/},
  note = {Source identifier: 1756937}
}