sentence: Tests of linkage disequilibrium were significant for 11 pairs of loci across all populations ( AD9 and AD10 , AD9 and AD8 , AD9 and AD17 , AD9 and AD11 , AD11 and AD19 , AD2 and AD4 , AD7 and AD14 , AD8 and AD11 , AD10 and AD11 , AD1 and AD11 , AD23 and AD24 ) ( P < 0.01 ) .