@misc{indiciae757f23896e99,
  title = {Assessing an external fistula.},
  author = {C T Hess},
  year = {1999},
  doi = {10.1097/00152193-199901000-00007},
  url = {https://pubmed.ncbi.nlm.nih.gov/9987290/},
  note = {Source identifier: 9987290}
}