title: Helicobacter pylori: populations and cohorts.
authors.forename: J J
authors.initials: JJ
authors.lastname: Deeks
authors.forename: N
authors.initials: N
authors.lastname: Banatvala
mesh_terms: D000328:Adult; D000367:Age Factors; D000907:Antibodies, Bacterial / Q000097:blood; D002648:Child; D015331:Cohort Studies; D005260:Female; D016481:Helicobacter Infections / Q000453:epidemiology* / Q000276:immunology; D016480:Helicobacter pylori / Q000276:immunology; D006801:Humans; D009674:Nova Scotia / Q000453:epidemiology; D011446:Prospective Studies; D012044:Regression Analysis
chemical_list: D000907:Antibodies, Bacterial