Figure 2From: Genome-wide association reveals three SNPs associated with sporadic amyotrophic lateral sclerosis through a two-locus analysis Nine two-locus multiplicative models. A and B are the high-risk alleles in the two markers. The symbol in each cell denotes the relative risk of this cell. φ = θ2, ρ = θ3 and γ = θ4.Back to article page