%0 Journal Article %T Serioprevalence of Helicobacter pylori Infection in and its Relationship with ABO Blood Groups %A Tesfahun Tadege %A Yohannes Mengistu %A Kassu Desta %A Daniel Asrat %J Ethiopian Journal of Health Development %D 2005 %I %U http://www.ajol.info/index.php/ejhd/article/view/9972