The allelic and genotype frequency of the TYMS polymorphisms in CCSD patients and controls.

*MAF, minor allele frequency from HapMap database for CHB population.$P value for difference in genotypes distributions between case and control subjects.&P value for Hardy-Weinberg equilibrium test in the control subjects. Additional detailed genotype frequencies is present in Table S2.#Not available in dbSNP database.

* 次要等位基因频率（minor allele frequency, MAF）：来源于HapMap数据库的中国汉族（CHB）人群数据。$ 病例组与对照组基因型分布差异检验的P值。& 对照组哈迪-温伯格平衡（Hardy-Weinberg equilibrium）检验的P值。详细基因型频率详见补充表S2。# 该位点未在dbSNP数据库中收录。