The distribution of BsmI polymorphism of the VDR gene inchildren of Hans in Taiyuan is unbalanced, and the bb genotype accounted for 80.9%. The frequency of b allele is 90.4%.

• （1）山西太原地区汉族儿童 VDR 基因 BsmI 多态性分布极不平衡，其中 bb 基因型最为多见，占 80.；9%25，b 等位基因频率为 90