4Podzrski RP, Podmrski DS, Wuerth A, et al. Analysis of the vacA, cagA, cage, ice.A, and babA 2 genes in Hp from sixty - one pediatric patients from the Midwestem United states [J ].Diagn Microbiol infect Dis, 2003,46:83 - 88.
5Wu CC, Chou PY, Hu CT, et al. Clinical Relevance of the vat.A, iceA, cagA, and flaA Genes of Helicobacter pylori Strains Isolated in Eastern Taiwan[J]. J Clin Microbiol, 2005, 43 (6) : 2913 - 2915.
6Rahman M, Mukhopadhyay AK, Nahar S, et al.DNA- Level Characterization of Helicobacter pylori Strains from Patients with Overt Disease and with Benign Infections in Bangladesh[J ]. J Clin Microbiol, 2003,41(5) : 2008 - 2014.
7Nishiya, Peek Rm Jr, Atherton JC, et al. Helleobacter pylori genotypes, host factors, and gastric mucosal histopathology in peptic ulcer disease[J]. Hum Pathol, 2005, 32:264 - 273.
8Yarnaoka Y, Souchek J, Odenbreit S, et al. Discrimination between cases of duodenal ulcer and gastritis on the basis of putative virulence factors of Helicobacter pylori[J] . Clin microbial, 2002, 40 : 2244 - 2246.
