1. Jones KR, Whitmire JM, Merrell DS (2010) A tale of two toxins: Helicobacter pylori CagA and VacA modulate host pathways that impact disease. Front Microbiol 1:115
2. Hunt RH, Xiao SD, Megraud F, Bazzoli F, Hamid S, Vakil N, Malfertheiner P, Leon-Barua R, Merwe SV, Wong BCY, Goh KL, Cohen H, Coeecho LG, Fock KM, Fefail S, Krahshuis JH (2010) Helicobacter pylori in developing countries. [http:/ / www.omge.org/ assets/ downloads/ en/ pdf/ guidelines/ 11_helicobacter_pylori_developing_c ountries_en.pdf] webcite
3. López AM, Delgado MP, Jaramillo C, Amézqita A, Parra G, Echeverry MM (2009) Characterization of the Helicobacter pylori vacuolating cytotoxin gene in gastric biopsy specimens from patients living in Tolima, Colombia. Rev Argent Microbiol 41(1):4–10
4. Atherton JC (1998) H. pylori virulence factors. Br Med Bull 54(1):105–120
5. Cendron L, Zanotti G (2011) Structural and functional aspects of unique type IV secretory components in the Helicobacter pylori cag-pathogenicity island. FEBS J 278:1223–1231. doi: 10.1111/j.1742-4658.2011.08038.x