@misc{indiciae31a2027b4636,
  title = {[Intraoperative cholangiography--causes of technical errors].},
  author = {J Póltorak and W Wiechno and M Zakrzewski},
  year = {1974},
  url = {https://pubmed.ncbi.nlm.nih.gov/4839852/},
  note = {Source identifier: 4839852}
}