VDR and hematocrit: The results of meta-analysis performed by Wang et al. suggests that the VDR-FokI polymorphism is associated with HT risk in overall population and in Asians, but not in Caucasians, and there is no association between TaqI, ApaI, and BsmI polymorphisms with HT risk neither in the overall population, nor in the ethnicity-stratified [18].