洛阳地区幽门螺杆菌VacA基因及亚型临床分布特征及其与胃肠疾病关系
락양지구유문라간균VacA기인급아형림상분포특정급기여위장질병관계
The clinical distribution characteristics of Helicobacter pylori VacA gene and subtypes in Luoyang and the relationship between them and gastrointestinal diseases
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