@misc{indiciae954371b4591a,
  title = {Modified technique for duodenal intubation.},
  author = {R B Jeffrey},
  year = {1988},
  doi = {10.1148/radiology.169.3.3187018},
  url = {https://pubmed.ncbi.nlm.nih.gov/3187018/},
  note = {Source identifier: 3187018}
}