[1] Univ Pittsburgh, Sch Med, Western Psychiat Inst & Clin, 3811 OHara St, Pittsburgh, PA 15213 USA
[2] MRC, Mol Biol Lab, Div Neurobiol, Cambridge, England
[3] Northwestern Univ, Feinberg Sch Med, Div Endocrinol Metab & Mol Med, Dept Med, Chicago, IL 60611 USA
[4] Univ Texas Southwestern Med Ctr Dallas, Dept Neurosci, Dallas, TX 75390 USA
[5] Univ Oxford, Dept Pharmacol, Oxford, England