@misc{indiciae64c34699385f,
  title = {Achalasia: current evaluation and therapy.},
  author = {M K Ferguson},
  year = {1991},
  doi = {10.1016/0003-4975(91)91373-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/1863166/},
  note = {Source identifier: 1863166}
}