Expressions of MMP-9 and TIMP-1 mRNA in esophageal  
squamous cell carcinoma tissue   and their significances
SUN Xiao-hong,LYU Hong-bo,LI Hui,YIN Na,LI Hui-wu,PANG Zuo-liang
Journal of Jilin University(Medicine Edition) . 2013, (6): 1247 -1251 .  DOI: DOI:10.7694/jldxyxb20130634