Siregar, G.A. and Halim, S. 2014. Correlation between Severity of Dyspepsia and Helicobacter pylori Infection. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy. 15, 1 (Apr. 2014), 3–8. DOI:https://doi.org/10.24871/15120143-8.