Gregor, P.; Hoff, M.; Holik, J.; Hadley, D.; Fang, N.; Coon, H.; Byerley, W.; Molecular Neurobiology Branch, National Institute on Drug Abuse, National Institutes of HealthBox 5180, Baltimore, MD 21224; Hoff M.; Department of Psychiatry, University of Utah Medical Center; Holik J.; Department of Psychiatry, University of Utah Medical Center; Hadley D.; Department of Psychiatry, University of Utah Medical Center; Fang N.; Department of Psychiatry, University of Utah Medical Center; Coon H.; Department of Psychiatry, University of Utah Medical Center; Byerley W.; Department of Psychiatry, University of Utah Medical Center