Fig. 1From: The correlation between CYP4F2 variants and chronic obstructive pulmonary disease risk in Hainan Han populationLinkage disequilibrium (LD) analysis of five SNPs in CYP4F2. The LD value is determined by r2 > 0.8 analyzed by Haploview software 4.2. The number in the diamonds is the LOD score of r2. Standard color schemes indicate the different levels of LD. Bright red: LOD > 2, D’ = 1Back to article page