FOXK2 and atrial fibrillation: We found a strong left lateralization effect for AF (F(1, 42) = 10.842, p = 0.002) and ILF (F(1, 42) = 8.832, p = 0.004), but no lateralization effect for IFOF (F(1, 42) = 2.210, p = 0.144) and UF (F(1, 42) = 0.004, p = 0.949).