Ringed esophagus: an association with esophagitis.

@article{Bousvaros1992RingedEA,
  title={Ringed esophagus: an association with esophagitis.},
  author={Athos Bousvaros and Donald A. Antonioli and Harland S. Winter},
  journal={The American journal of gastroenterology},
  year={1992},
  volume={87 9},
  pages={1187-90}
}