@misc{indiciae9851e8488709,
  title = {Diffuse esophageal spasm.},
  author = {C P Barham and D Alderson and D C Gotley},
  year = {1992},
  doi = {10.1007/bf01300304},
  url = {https://pubmed.ncbi.nlm.nih.gov/1618067/},
  note = {Source identifier: 1618067}
}