@misc{indiciae6cad6b56afbe,
  title = {Fecal occult blood testing.},
  author = {S J Winawer},
  year = {1976},
  doi = {10.1007/bf01072082},
  url = {https://pubmed.ncbi.nlm.nih.gov/1015497/},
  note = {Source identifier: 1015497}
}