S, Yang, Yan KL, Zhang XJ, Xiao FL, Fan X, Gao M, Cui Y, et al. 2006. “Systematic Evaluation of Association Between the Microsomal Glutathione S-Transferase 2 Common Variation and Psoriasis Vulgaris in Chinese Population”. Arch Dermatol Res. 2006 Aug; 298 (3): 107–12.