@misc{indiciae84a7acba1c97,
  title = {Multiple esophageal rings.},
  author = {V P Agarwal and B R Marcel},
  doi = {10.1016/s0016-5107(90)70973-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/2335284/},
  note = {Source identifier: 2335284}
}