FACTORS INFLUENCING SERUM PEPSINOGEN LEVELS IN A CHINESE POPULATION AT HIGH RISK OF STOMACH CANCER
Chang Yunsheng You Weicheng Zhang Lan Zhao LeiMa Junling Liu Xianqiu Liu Weidong Robert W. KnellerZhang Jinsong Micheal I. Samloff William J. BlotWeifang Medical Institute;Weifang 261041;Shandong;China Beijing Institute far Cancer Research;Beijing 100034;China Linqu Public Health Bureau;Lmqu 252600;Shandong;China National Cancer Institute;Betheada;Maryland;;USA 20892 Verterans Administration Medical Center;Sepulveda;CA;USA 91343
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