@misc{indiciaeeb1d962107e5,
  title = {[Gallstone ileus].},
  author = {S J VAN COEVORDEN and T DIRKSEN and C VAN DER TAS},
  year = {1958},
  url = {https://pubmed.ncbi.nlm.nih.gov/13577953/},
  note = {Source identifier: 13577953}
}