Methods The diagnosis of chronic gastritis accords with updated Sydney classification system, rapid urease test, histopathological staining method and (superscript 13)C breath test were used in detection of HP.

• 方法慢性胃炎诊断标准参照最新悉尼分类系统，幽门螺杆菌检测采用快速尿素酶试验、病理组织学染色及(上标13)C呼气试验。