2EUSEBI L H,ZAGARI, R M, BAZZOLI F. Epidemiolo- gy of Helicobacter pylori Infection [ J ]. Helicobacter, 2014,19 (Suppl) : 1 - 5.
3ZHU Y, ZHOU X, WU J. Risk factors and prevalence of Helicobacter pylori infection in persistent high inci- dence area of gastric carcinoma in Yangzhong city [ J ]. Gastroenterol Res Pract,2 014 (2014 ) :481 365.
4BAINGANA R K, KIBOKO ENYARU J, et al. Helico- bacter pylori infection in pregnant women in four dis- tricts of Uganda:role of geographic location, education and water sources [ J t. BMC Public Health, 2014 (14) : 915.
5CIZGINRE S, ORDULU Z, KADAYIFCI A. Approach to Helicobacter pylori infection in geriatric population[ J]. World J Gastrointest Pharmacol Ther, 2014,5 (3) : 139 - 147.
6URITA Y, WATANABE T, KAWAGOE N, et al. Role of infected grandmothers in transmission of Helicobacter pylori to children in a Japanese rural town [ J ]. Paediatr Child Health,2013,49:394 - 398.
7ADAMS B L, BATES T C, OLIVER J D. Survival of H elicobacterpy - lori in a natural freshwater environment [ J ]. Appli Environ Microbiol, 2003,69 ( 12 ) :7 462 - 7 466.
9HANAFI M I, MOHAMED A M. Helicobacter pylori in- fection : seroprevalence and predictors among healthy in- dividuals in A1 Madinah, Saudi Arabia [J ]. J Egypt Public Health Assoc,2013,88( 1 ) :40 - 45.
10OZAYDIN N, TURKYILMAZ S A, CALI S. Prevalence and risk factors of Helicobacter pylori in Turkey:a na- tionally - representative, cross - sectional, screening with the13 C -Urea breath test[ J ]. BMC Public Health, 2013(13) :1 215.