to further define the influence of cigarette smoking on the pathophysiology of gastroesophageal reflux disease , studies were done to evaluate acid clearance in the esophagus and the salivary titratable base secretion of chronic smokers as compared to those of nonsmokers , and to ascertain the acute effects of smoking on these variables .
C0017168
gastroesophageal reflux disease
C0014876
esophagus