Title: Gastroesophageal Reflux Disease

Upper esophageal sphincter (UES) and LES pressure, the size of hiatal hernia, and esophageal body contractions were recorded for data analysis. Moreover, hiatal hernia, reflux esophagitis, and esophageal metaplasia were determined by gastrointestinal (GI) endoscopy, which was independent of pH-monitoring and manometry. ................
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