@misc{indiciae39c4bc0a73e1,
  title = {Sonolucent biliary cast preventing endoscopic sphincterotomy.},
  author = {F Shanahan and J Lennon and T Corrigan},
  year = {1981},
  doi = {10.1055/s-2007-1021689},
  url = {https://pubmed.ncbi.nlm.nih.gov/7274174/},
  note = {Source identifier: 7274174}
}