@misc{indiciaec1e74a65e0bc,
  title = {Gallstone ileus.},
  author = {R N Mullick and R C Renjhen and R N Shingal},
  year = {1972},
  url = {https://pubmed.ncbi.nlm.nih.gov/4649454/},
  note = {Source identifier: 4649454}
}