Siregar, G., Halim, S. and Sitepu, R. 2016. Serum IL-10, MMP-7, MMP-9 Levels in Helicobacter pylori Infection and Correlation with Degree of Gastritis. Open Access Macedonian Journal of Medical Sciences. 4, 3 (Sep. 2016), 359–363. DOI:https://doi.org/10.3889/oamjms.2016.099.