title: Helicobacter pylori infection: mainly foe but also friend?
authors.forename: Olof
authors.initials: O
authors.lastname: Nyrén
authors.forename: William J
authors.initials: WJ
authors.lastname: Blot
mesh_terms: D000230:Adenocarcinoma / Q000453:epidemiology / Q000382:microbiology*; D002299:Cardia; D019049:Developed Countries / Q000706:statistics & numerical data; D004938:Esophageal Neoplasms / Q000453:epidemiology; D016481:Helicobacter Infections / Q000150:complications* / Q000453:epidemiology; D016480:Helicobacter pylori / Q000302:isolation & purification; D006801:Humans; D016017:Odds Ratio; D011446:Prospective Studies; D013274:Stomach Neoplasms / Q000453:epidemiology / Q000382:microbiology*