1 Maryland Psychiatric Research Center, University of Maryland, P.O. Box 21247, Baltimore, Maryland 21228.
2 Experimental Therapeutics Branch, National Institute of Mental Health, Bethesda, Maryland 20892.
Send reprint requests to Dr. Kirkpatrick.
Supported in part by PHS grants MH-40279, MH44801, and MH-00925, and a grant from the National Alliance for Research on Schizophrenia and Depression.