@misc{indiciaeb77dfa18d0a2,
  title = {Stone swallowing.},
  author = {D Unwin},
  year = {1994},
  doi = {10.1136/vr.135.21.511},
  url = {https://pubmed.ncbi.nlm.nih.gov/7871695/},
  note = {Source identifier: 7871695}
}