Supported by National Natural Science Foundation of China,No.U1604174;Henan Provincial Government-Health and Family Planning Commission,No.20170123;Henan Provincial Government-Health and Family Planning Commission Research Innovative Talents Project,No.51282;Henan Provincial Government-Science and Technology Bureau,No.142300410050.
BACKGROUND Type I Helicobacter pylori(H.pylori)infection causes severe gastric inflammation and is a predisposing factor for gastric carcinogenesis.However,its infection status in stepwise gastric disease progression ...