Moore CM, Frazier JA, Glod CA, Breeze JL, Dieterich M, Finn CT, Frederick Bd, Renshaw PF. Glutamine and glutamate levels in children and adolescents with bipolar disorder: a 4.0-T proton magnetic resonance spectroscopy study of the anterior cingulate cortex. J Am Acad Child Adolesc Psychiatry. 2007 Apr; 46(4):524-34.