@misc{indiciae3be63487beaa,
  title = {Understanding the gastrointestinal system. Part 1.},
  author = {E A Harald and K Kaufman},
  year = {1994},
  doi = {10.1097/00152193-199407000-00030},
  url = {https://pubmed.ncbi.nlm.nih.gov/8022576/},
  note = {Source identifier: 8022576}
}