Paulose A, John A, Kuruppasseril A, Kunnathuparambil S, Panakkal R. EFFICACY OF ENDOSCOPY AND NARROW BAND IMAGING IN DIAGNOSING HELICOBACTER PYLORI IN CHRONIC GASTRITIS PATIENTS PRESENTING WITH SIGNIFICANT DYSPEPSIA: A PROSPECTIVE OBSERVATIONAL STUDY. International Journal of Medicine and Public Health [Internet]. 2024 [cited 2024 Jul 6];14.