@misc{indiciae5695dec8f33e,
  title = {[Debatable diagnostic problems in biliary tract diseases].},
  author = {N V El'shteĭn and U B Mardna and E R Lond and U I Iosiia},
  year = {1981},
  url = {https://pubmed.ncbi.nlm.nih.gov/7221941/},
  note = {Source identifier: 7221941}
}