Nonconscious attention bias to threat is correlated with anterior cingulate cortex gray matter volume: A voxel-based morphometry result and replication. - Joshua M. Carlson; Felix Beacher; Karen S. Reinke; Reza Habib; Eddie Harmon-Jones; Lilianne R. Mujica-Parodi; Greg Hajcak (NeuroImage, 2012)