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To investigate the relationship between cytochrome P4501A1 (CYP1A1) Msp I gene polymorphism and childhood acute leukemia (AL). Relevant literature was extensively searched and screened by Pubmed and Wanfang Database, Chinese Science Journal Database and Chinese Journal Net. Various data consolidation, combined OR values and their 95% CI were tested by RevMan 4.2; Funnel plots were used for the...
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