Effect of Helicobacter pylori infection on epidermal growth factor receptor (EGFR) expression and cell proliferation of gastric epithelial mucosa: correlation to macroscopic and microscopic diagnosis

幽门螺杆菌感染对胃上皮黏膜表皮生长因子受体（EGFR）表达和细胞增殖的影响：与宏观和微观诊断的相关性