His work forms the basis of many current concepts regarding the regulation of esophageal sphincters, esophageal peristalsis, esophageal nocioceptors, gastroparesis and Barrett's esophagus.

Barrett's esophagus is an acquired metaplastic abnormality in which the normal stratified squamous epithelium lining of the esophagus is replaced by an intestinal-like columnar epithelium.

His main research interest is in the physiology and pathophysiology of the esophagus. In addition to holding continuous research funding from Canadian Institutes of Health Research for the past 18 ...