@misc{indiciaec708b9ea7f9d,
  title = {Gallstone ileus.},
  author = {L Kreel},
  year = {1985},
  doi = {10.1136/pgmj.61.716.511},
  url = {https://pubmed.ncbi.nlm.nih.gov/4011535/},
  note = {Source identifier: 4011535}
}