Association of gastric metaplasia with Helicobacter positive peptic ulcersK Seppala,TU Kosunen,P Sipponen,PET Arkkila,H RautelinGUT(2002)引用 0|浏览0暂无评分AI 理解论文溯源树样例生成溯源树,研究论文发展脉络Chat Paper正在生成论文摘要