@misc{indiciaed71ef7e6102b,
  title = {Gallstone ileus.},
  author = {A M Kaiser},
  year = {1997},
  doi = {10.1056/nejm199703203361217},
  url = {https://pubmed.ncbi.nlm.nih.gov/9072692/},
  note = {Source identifier: 9072692}
}