Budiman, G.T.S. et al. 2021. Clinical and Endoscopic Features in Helicobacter Pylori Infection: Literature Review. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy. 22, 1 (May 2021), 66–72. DOI:https://doi.org/10.24871/221202166-72.