Abbreviations
From the following article
Endoscopic evaluation of esophageal motility disorders
Susan E. McCormick and Richard A. Kozarek
GI Motility online (2006)
doi:10.1038/gimo29
DES
diffuse esophageal spasm
GEJ
gastroesophageal junction
GERD
gastroesophageal reflux disease
LES
lower esophageal sphincter