title: Helicobacter pylori in gastro-oesophageal reflux disease needs comparator.
authors.forename: Grigoris I
authors.initials: GI
authors.lastname: Leontiadis
authors.forename: Savvas
authors.initials: S
authors.lastname: Kadis
authors.forename: Virender K
authors.initials: VK
authors.lastname: Sharma
authors.forename: Colin W
authors.initials: CW
authors.lastname: Howden
mesh_terms: D005764:Gastroesophageal Reflux / Q000382:microbiology*; D016481:Helicobacter Infections / Q000150:complications*; D016480:Helicobacter pylori; D006801:Humans; D015201:Meta-Analysis as Topic