TY - BOOK AU - Calori, John Daniel TI - Prevalence and risk factors of helicobacter pylori infection among patients with peptic ulcers disease undergoing upper gastrointestinal endoscopy attending at Benjamin Mkapa hospital AV - RC 840 .H38C35 2020 PY - 2020/// CY - Dodoma PB - The University of Dodoma KW - Helicobacter pylori infections KW - Peptic ulcers disease KW - Gastrointestinal endoscopy N1 - Includes bibliographical references ER -