@misc{indiciae49945cfe2c26,
  title = {Fine caliber cholangioscopy.},
  author = {R W Guenther and D Vorwerk and K J Klose and M Thelen and G Kissinger},
  year = {1990},
  url = {https://pubmed.ncbi.nlm.nih.gov/2236529/},
  note = {Source identifier: 2236529}
}