Fig. 1. Study population. EGD, esophagogastroduodenoscopy; FGID, functional gastrointestinal disorder; AEE, asymptomatic erosive esophagitis; NERD, non-erosive reflux disease; ERD, erosive reflux disease.

Journal of Neurogastroenterology and Motility 2018;24:593~602 https://doi.org/10.5056/jnm18069

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