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Effect of VKORC1, CYP2C9, CYP4F2, APOE ε2, and CALU genetic polymorphisms on warfarin dose requirements in Egyptians. Bars represent mean warfarin dose required. Error bars represent standard deviation. (P<0.05 is considered significant, test done by analysis of variance). APOE ε2 was coded as 0, 1, and 2 copies.
