@misc{indiciae3cc583df05c1,
  title = {A method for transduodenal sphincterotomy.},
  author = {M Frilander and T Lehtonen and M Lempinen},
  year = {1969},
  url = {https://pubmed.ncbi.nlm.nih.gov/5367292/},
  note = {Source identifier: 5367292}
}