[1] Univ N Carolina, Dept Pharmacol, Chapel Hill, NC 27599 USA
[2] Univ N Carolina, Dept Psychiat, Chapel Hill, NC 27599 USA
[3] Univ Florida, McKnight Brain Inst, Dept Psychiat, Gainesville, FL 32608 USA
[4] Univ Florida, McKnight Brain Inst, Dept Neurosci, Gainesville, FL 32608 USA
[5] Univ Florida, McKnight Brain Inst, Dept Pharmacol, Gainesville, FL 32608 USA
[6] Harvard Univ, Sch Med, Brain Imaging Ctr, McLean Hosp, Belmont, MA 02478 USA
[7] Harvard Univ, Sch Med, Dept Psychiat, Belmont, MA 02478 USA
[8] Int Flavors & Fragrances Inc, Shrewsbury, NJ 07702 USA
[9] Schering Plough Res Inst, Dept CNS & Cardiovasc Res, Kenilworth, NJ 07033 USA
[10] Pfizer Global Res & Dev, CNS Discovery Biol & Gen Pharmacol, Groton, CT 06340 USA
[11] Emory Univ, Dept Psychiat, Atlanta, GA 30307 USA