@misc{indiciae1ed04f82751c,
  title = {Not . . . achalasia.},
  author = {K D Bardham and C C Rigby},
  year = {1984},
  doi = {10.1136/bmj.288.6416.569},
  url = {https://pubmed.ncbi.nlm.nih.gov/6421383/},
  note = {Source identifier: 6421383}
}