@misc{indiciae4525abd2e449,
  title = {Esophageal motility disorders.},
  author = {G Vantrappen and J Hellemans},
  year = {1978},
  doi = {10.1159/000400848},
  url = {https://pubmed.ncbi.nlm.nih.gov/721024/},
  note = {Source identifier: 721024}
}