3Axon AT. Are all Helicobacters equal? Mechanisms of gastroduodenal pathology and their clinical implications. Gut 1999;45(Suppl 1):Ⅰ1-4.
4Mukhopadhyay AK, Kersulyte D, Jeong JY, Datta S, Ito Y, Chowdhury A, Chowdhury S, Santra A, Bhattacharya SK, Azuma T, Nair GB, Berg DE. Distinctiveness of genotypes of Helicobacter pylori in Calcutta, India. J Bacteriol 2000;182:3219-3227.
5Atherton JC, Cao P, Peek RM Jr, Tummuru MK, Blaser MJ, Cover TL. Mosaicism in vacuolating cytotoxin alleles of Helicobacter pylori. Association of specific vacA types with cytotoxin production and peptic ulceration. J Biol Chem 1995;270:17771-17777.
6Yamaoka Y, Kwon DH, Graham DY. A M (r) 34000 proinflam-matory outer membrane protein(oipA)of Helicobacter pylori. Proc Natl Acad Sci USA 2000;97:7533-7538.
7Zheng PY, Hua J, Yeoh KG, Ho B. Association of peptic ulcer with increased expression of Lewis antigens but not cagA, iceA, and vacA in Helicobacter pylori isolates in an Asian population. Gut 2000;47:18-22.
8Ikenoue T, Maeda S, Ogura K, Akanuma M, Mitsuno Y, Imai Y, Yoshida H, Shiratori Y, Omata M. Determination of Helicobacter pylori virulence by simple gene analysis of the cag pathogenicity island. Clin Diagn Lab Immunol 2001;8:181-186.
9Strobel S, Bereswill S, Balig P, Allgaier P, Sonntag HG, Kist M. Identification and analysis of a new vacA genotype variant of Helicobacter pylori in different patient groups in Germany. J Clin Microbio 1998;36:1285-1289.
10van Doorn LJ, Figueiredo C, Sanna R, Plaisier A, Schneeberger P, de Boer W, Quint W. Clinical relevance of the cagA, vacA, and iceA status of Helicobacter pylori. Gastroenterology 1998;115:58-66.
2Mahboobeh Nakhaei Moghaddam.Prevalence of Helicobacter Pylori Infection in Patients withDigestive Complaints Using Urea Breath Test inMashhad,Northeast Iran [J].JRItS,2010,10(2):77-80.
3Aznida Firzah Abdul Aziz,Zuhra Hamzah,Seng Fah Tong,et al.Helicobacter pylori related dyspepsia:prevalence and treatment outcomes at University Kebangsaan Malaysia-Primary Care Centre [J].Asia Pacific Family Medicine,2009,8(4): 1-5.
4F Naja,N Kreiger,T Sullivan.Helicohacter pylori infection in Ontario Prevalence and risk factors[J].Can J Gastroenter ol,2007,21 (8):501-506.
6Atsushi Ogihara,Shogo Kikuchi,Ayako Hasegawa,et al.Relationship between Helicobacter pylori infection and smoking and drinking habits[J].Journalof Gastroenterology and Hepatology,2000,15 (3): 271-276.
