This was examined by assessing associations between frequency of polymorphisms in key metabolism enzyme genes and latitude, with findings unsupportive of this hypothesis but suggesting that folate genotypes are selected to maintain homeostasis within the folate system
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I know you can technically use both together in the same sequence but I find checking which has the lower pH and then waiting 30 minutes between applications pretty daunting
Ma L, Chen C, Zhao C, Li T, Ma L, Jiang J, et al
This is payer-dependent and subject to NCCI edit scrutiny
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