@misc{indiciaebec73303a8cb,
  title = {An improved method for faecal collection: the faecal field-kit.},
  author = {N E Hoffman and N F LaRusso and A F Hofmann},
  year = {1973},
  doi = {10.1016/s0140-6736(73)91745-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/4122989/},
  note = {Source identifier: 4122989}
}