Yumang Z, Pangilinan J. Close observation endoscopy of gastric mucosal pattern in predicting Helicobacter pylori infection: A single-center cross-sectional study. PhilJGastro [Internet]. 2020 Jun. 1 [cited 2026 Jun. 30];9(1). Available from: https://philjgastro.com/index.php/pjg/article/view/2