title: Confounding factors in the detection of Helicobacter pylori infection in patients with upper gastrointestinal bleeding.
authors.forename: G T
authors.initials: GT
authors.lastname: Fantry
authors.forename: A H
authors.initials: AH
authors.lastname: Rosenstein
authors.forename: S P
authors.initials: SP
authors.lastname: James
mesh_terms: D001706:Biopsy; D005188:False Negative Reactions; D005751:Gastric Lavage; D005753:Gastric Mucosa / Q000201:enzymology; D006471:Gastrointestinal Hemorrhage / Q000150:complications*; D016481:Helicobacter Infections / Q000150:complications / Q000175:diagnosis*; D016480:Helicobacter pylori / Q000302:isolation & purification; D006801:Humans; D016133:Polymerase Chain Reaction; D012329:RNA, Bacterial / Q000032:analysis; D012680:Sensitivity and Specificity; D014510:Urease / Q000032:analysis
chemical_list: D012329:RNA, Bacterial; D014510:Urease