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Gao L, Pan X, Li L, Liang W, Bai P, Rao L, Su X, Wang T, Zhou B, Wei Y, Zhang L. Null Genotypes of GSTM1 and GSTT1 Contribute to Risk of Cervical Neoplasia: An Evidence-Based Meta-Analysis. PLoS ONE. 2011 May 23;6(5):e20157. doi: 10.1371/journal.pone.0020157. |