[11C]flumazenil Binding Is Increased in a Dose-Dependent Manner with Tiagabine-Induced Elevations in GABA Levels. - Frankle, W. Gordon; Cho, Raymond Y.; Mason, N. Scott; Chi-Min Chen; Himes, Michael; Walker, Christopher; Lewis, David A.; Mathis, Chester A.; Narendran, Rajesh (PLoS ONE, 2012)