@misc{indiciae624911b2bf7b,
  title = {Postoperative fiberoptic choledochoscopy.},
  author = {D H Birkett and L F Williams},
  year = {1981},
  doi = {10.1097/00000658-198111000-00012},
  url = {https://pubmed.ncbi.nlm.nih.gov/7294933/},
  note = {Source identifier: 7294933}
}