Guo, X., Zeng, Y., Deng, H., Liao, J., Zheng, Y., Li, J., Kessing, B. and O’Brien, S.J. (2010) Genetic Polymorphisms of CYP2E1, GSTP1, NQO1 and MPO and the Risk of Nasopharyngeal Carcinoma in a Han Chinese Population of Southern China. BMC Research Notes, 3, 212.