@misc{indiciaefdcc4d8db477,
  title = {ERCP without air bubbles.},
  author = {J R Graham},
  year = {1976},
  doi = {10.5694/j.1326-5377.1976.tb130338.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/994937/},
  note = {Source identifier: 994937}
}