@misc{indiciaee15e4b61bb5e,
  title = {Gastrointestinal symptoms.},
  author = {A J Greenwald},
  year = {1980},
  doi = {10.1001/archsurg.1980.01380050096026},
  url = {https://pubmed.ncbi.nlm.nih.gov/7377970/},
  note = {Source identifier: 7377970}
}