3Wallace JL. Possible mechanisms and mediators of gastritis associated with Hellcobacter Pylori infection Scand J Gastvocnterol, 1991,187 (suppl) :65.
4Graham DY. Helicobacter pylofi :Its epidemiology and its role in duodenal Ulcer disease [ J ]. Gastroenterol Hepatol ,1991,6(2) :105.
5Shieru E, Toshifumi O, Yusuke S, et aL Detection of helicobactor Pylori infection in early stage gastric cancer. Cancer,1995,75 : (9) :2203.
6Sipponen P. Hyvarinen H Role of Helicobacter pylori in the pathogenesis of gantrtls peeptic alcer and gastric cancel.Scand J Gstroenterol suppl, 1993,196:3.
7Loffeld RILF, willems, Flendrg JA, et al. Helicobactry pylori and gastric curcinoma. Histopathology, 1990,17 ( 1 ) :537-540.
8Parsonenet J, Friedman CD, Vandersteen DP, et al. Hellcobacter Pylori infection and risk of gastric carcinoma. Neng IJ Med,1991,325(16) :1127 - 1131.
9FormanD, NewellDG, FullertonF, et al. Association hetween inftction with Helicobacter Pylori and risk of gastric cancer evidence from a pyospective investigation Br men J, 1991,302(1):1302-1305.
