@misc{indiciaef0a96ff3756c,
  title = {Occult blood screening.},
  author = {N C Armitage and J D Hardcastle},
  year = {1985},
  doi = {10.1016/0016-5085(85)90609-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/3896913/},
  note = {Source identifier: 3896913}
}