@misc{indiciae4742d8fa1dee,
  title = {Lower esophageal ring.},
  author = {C Y Hadidian and L Kiefer and R F Miller},
  year = {1968},
  doi = {10.1378/chest.54.5.465},
  url = {https://pubmed.ncbi.nlm.nih.gov/5698593/},
  note = {Source identifier: 5698593}
}