[1] THOMAS JEFFERSON UNIV, JEFFERSON MED COLL, DEPT PSYCHIAT & HUMAN BEHAV, BIOL PSYCHIAT SECT, PHILADELPHIA, PA 19107 USA
[2] NIMH, BIOL PSYCHIAT BRANCH, PSYCHOBIOL SECT, BETHESDA, MD 20205 USA
[3] VET ADM OUT PATIENT CTR, COATESVILLE JEFFERSON PROGRAM, PHILADELPHIA, PA USA