%0 Journal Article %T RETRACTED ARTICLE: Association between glutathione S-transferase M1 null genotype and risk of gallbladder cancer: a meta-analysis %A Sun, Hong-Li %A Han, Bing %A Zhai, Hong-Peng %A Cheng, Xin-Hua %A Ma, Kai %J Tumor Biology %V 35 %N 1 %P 501-505 %@ 1010-4283 %D 2013-10-19 %I Springer Netherlands %~ DeepDyve