复旦大学附属中山医院 Zhongshan Hospital, Fudan University Prevalence of GER symptoms in China Harbin Dunhuang Beijing 10.19% e111r (XIan 16.9% xian Shanghai776% 发 shangha1 La吕a chengdu mre rges Guilin ong Kong Haiko www.zshospital.comwww.zshospital.com Beijing10.19% Xi’an 16.9% Shanghai7.76% Prevalence of GER symptoms in China