@misc{indiciaecb6c085044bc,
  title = {Routine operative cholangiography.},
  author = {T Powell},
  year = {1970},
  doi = {10.1016/s0140-6736(70)92677-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/4193335/},
  note = {Source identifier: 4193335}
}