Fig. 1

Linkage disequilibrium test of the three polymorphisms. The rs1491034 polymorphism was in linkage disequilibrium (LD) with rs982873 (D’ = 0.56, r2 = 0.17), and the rs9301654 polymorphism was in low LD with the rs982873 (D’ = 0.45, r2 = 0.08) polymorphism