Chang, Ming-Chu Quantitative correlation of Helicobacter pylori stool antigen (HpSA) test with 13C-urea breath test (13C-UBT) by the updated Sydney grading system of gastritis. [electronic resource] - Hepato-gastroenterology - 576-9 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0172-6390 Subjects--Topical Terms: AdolescentAdultAgedAged, 80 and overAntigens, Bacterial--analysisBreath TestsFeces--microbiologyFemaleGastritis--classificationHelicobacter Infections--diagnosisHelicobacter pylori--immunologyHumansImmunoassayMaleMiddle AgedUrease--analysis