Abbreviations
From the following article
Clinical disorders of oral, pharyngeal and esophageal motility
W.G. Paterson and Raj K. Goyal
GI Motility online (2006)
doi:10.1038/gimo18
DES
diffuse esophageal spasm
GERD
gastroesophageal reflux disease
LES
lower esophageal sphincter
TLESR
transient LES relaxation