@misc{indiciaefafac35d3119,
  title = {Gallstone ileus.},
  author = {Marc G H Besselink and Jan Kroeze},
  year = {2005},
  doi = {10.4065/80.5.699},
  url = {https://pubmed.ncbi.nlm.nih.gov/15887440/},
  note = {Source identifier: 15887440}
}