Selection of SNPs
SNPs retrieved from the HapMap database (http://www.hapmap.org/)
were imported into Haploview 4.2 software (Broad Institute, Cambridge,
MA, USA) and SNPs with a minor allele frequency (MAF) ≥0.01 were
selected. IL2RA rs2104286, rs12722489, and rs11594656,IL-10 rs1800896, rs1800871, and rs1800872, IFN-γrs2430561, IRF5 rs2004640, and CCR2 rs1799864 were finally
identified for further study.