CJCP     2010 12 (04):  262-266    ISSN: 1008-8830  CN: 43-1301/R Relationship between gene polymorphisms in MMP-9 and Helicobacter pylori-related upper gastrointestinal disease in children SHAN Qing-Wen, JING Cheng-Xue, WANG Lin-Lin, LU Zi-Li, TANG Qing, YUN Xiang, LIAN Shu-Jun Department of Pediatrics, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China.Email:shanqw333@yahoo.com.cn Received: null  Revised: null  Online: null Supporting info