Altered distribution of nicotinamide-adenine dinucleotide phosphate-diaphorase cells in frontal lobe of schizophrenics implies disturbances of cortical development. - Akbarian,S.; Bunney,W.E Jr.; Potkin,S.G.; Wigal,S.B.; Hagman,J.O.; Sandman,C.A.; Jones,E.G. (Arch Gen Psychiatry, 1993)