@misc{indiciaecc667fd37bb8,
  title = {Operative cholangiography.},
  author = {C Havard},
  year = {1970},
  doi = {10.1002/bjs.1800571102},
  url = {https://pubmed.ncbi.nlm.nih.gov/5476294/},
  note = {Source identifier: 5476294}
}