Effect of Helicobacter Pylori on Plasma Metabolic Phenotype in Patients With Gastric Cancer oleh Yan-Ping Wang PhD, Ting Wei MD, Xiao Ma MD, Xiao-Liang Zhu PhD, Long-Fei Ren PhD, Lei Zhang PhD, Fang-Hui Ding MD, Xun Li PhD, Hai-Ping Wang MD, Zhong-Tian Bai PhD, Ke-Xiang Zhu PhD, Long Miao MD, Jun Yan MD, Wen-Ce Zhou PhD, Wen-Bo Meng PhD, Yu-Qin Liu PhD