@article{article11a6c782,
title   = {Alteration of the upper esophageal sphincter belch reflex in patients with achalasia},
author = {Massey, B T and Hogan, W J and Dodds, W J and Dantas, Roberto Oliveira},
year = {1992},
doi = {10.1016/0016-5085(92)91180-c},
journal   = {Gastroenterology}
}