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Bani Chander Roland, Daewoong Lee, Ahmed Salem,Sariat Ibrahim, Yuriko Mori, Stephen Meltzer
Background: Helicobacter pylori (Hp) infection has previously been thought to account for nearly all chronic gastritis. However, recent studies have suggested that Hp-negative gastritis is common and increasing in prevalence in the United States. The etiology and associated risk factors for Hp-negative gastritis remain uncertain.