Polymorphism / California / Acute Myeloid Leukemia / Humans / Child / Mathematical Sciences / Confidence intervals / American / Detoxification / Meta Analysis / Systematic review / Enzyme / Odds ratio / Case Control Study / Confidence Interval / Acute Lymphoblastic Leukemia / Case Control Studies / Mathematical Sciences / Confidence intervals / American / Detoxification / Meta Analysis / Systematic review / Enzyme / Odds ratio / Case Control Study / Confidence Interval / Acute Lymphoblastic Leukemia / Case Control Studies