China Survey of Peptic Ulcer Bleeding

Research Site, Hefei

Research Site, Beijing

Research Site, Chongqing

Research Site, Fuzhou

Research Site, Xiamen

Research Site, Lanzhou

Research Site, Guangzhou

Research Site, Shenzhen

Research Site, Haerbin

Research Site, Wuhan

Research Site, Changsha

Research Site, Jiangyin

Research Site, Nanjing

Research Site, Nantong

Research Site, Nanchang

Research Site, Changchun

Research Site, Shenyang

Research Site, Hohhot

Research Site, Jinan

Research Site, Shanghai

Research Site, Taiyuan

Research Site, Xian

Research Site, Yangquan

Research Site, Chengdu

Research Site, Tianjin

Research Site, Ürümqi

Research Site, Kunming

Research Site, Fuyang

Research Site, Hangzhou

Research Site, Jinhua

Research Site, Wenzhou