@misc{indiciaebb563ffd5a45,
  title = {Biliary surgery.},
  author = {G L CALK and O S COFER and A L EVANS and H H GREGORY},
  year = {1956},
  url = {https://pubmed.ncbi.nlm.nih.gov/13377081/},
  note = {Source identifier: 13377081}
}