@misc{indiciae68491d8bf8af,
  title = {Endoscopic sphincterotomy.},
  author = {P F O'Regan and F Shanahan and C Gallagher and J P Crowe and J R Lennon},
  year = {1983},
  doi = {10.1007/bf02960747},
  url = {https://pubmed.ncbi.nlm.nih.gov/6642954/},
  note = {Source identifier: 6642954}
}