| GERD | gastroesophageal reflux disease |
| NERD | non-erosive reflux disease |
| RE | reflux esophagitis |
| BE | Barrett’s esophagus |
| BMI | body mass index |
| FD | functional dyspepsia |
| FC | functional constipation |
| IBS | irritable bowel syndrome |
| GERD-HRQL | gastroesophageal reflux disease health-related quality of life |
| SF-36 | 36-item short-form health survey |
| PPI | proton pump inhibitor |
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