@article{article1419,
  title = {Gallstone Ileus Due to a Cholecystoduodenal Fistula},
  author = {Kostov, D. and Kostov, V.},
  journal = {Journal of Clinical Practice and Research},
  year = {2019},
  volume = {41},
  pages = {450-452},
  doi = {10.14744/etd.2019.54926}
}