复旦大学附属中山医院 Zhongshan Hospital, Fudan University Gastroesophageal reflux disease (GERD Gao Hong Department of Gastroenterology Zhongshan Hospital Fudan University www.zshospital.comwww.zshospital.com Gastroesophageal reflux disease (GERD) Gao Hong Department of Gastroenterology Zhongshan Hospital Fudan University