1Bayerdorffer E,Oertel H,Lehn N,et al. Topographic association between active gastritis and Campylobacter pylori colonization. J Clin Pathol,1989. 42:834-839.
2Genta RM,Huberman RM,Graham DY. The gastric cardia in Helicobacter pylori infection. Hum Pathol, 1994, 25:915-919.
3Karaes WE. Samloff IM, Siurala M,et al. Positive serum antibody and negative tissue staining for H. pylori in subjects with atrophic body gastritis. Gastroenterology, 1991.101:167.