@misc{indiciae9d034cc98f73,
  title = {Endoscopic papillotomy.},
  author = {H Koch and W Rösch and O Schaffner and L Demling},
  year = {1977},
  url = {https://pubmed.ncbi.nlm.nih.gov/913980/},
  note = {Source identifier: 913980}
}