Low GABA concentrations in occipital cortex and anterior cingulate cortex in medication-free, recovered depressed patients. - Bhagwagar, Z; Wylezinska, M; Jezzard, P; Evans, J; Boorman, E; M Matthews, P; J Cowen, P (international journal of neuropsychopharmacology / official scientific journal of the Collegium Internationale Neuropsychopharmacologicum (CINP), 2008)