复旦大学附属中山医院 Zhongshan Hospital, Fudan University GERD Classification 1. Reflux esophagitis 2. Non-erosive reflux disease( NerD) 3. Barrett Esophaguswww.zshospital.com GERD Classification 1. Reflux esophagitis 2. Non-erosive reflux disease(NERD) 3. Barrett Esophagus