@misc{indiciae6a30098c5cfc,
  title = {Duodenal bulb acidity.},
  author = {J E Berk},
  year = {1988},
  doi = {10.1016/0016-5085(88)90712-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/3360274/},
  note = {Source identifier: 3360274}
}