[1] SCRIPPS CLIN & RES FDN, DEPT BASIC & CLIN RES, DIV PRECLIN NEUROSCI & ENDOCRINOL, LA JOLLA, CA 92037 USA
[2] UNIV CALIF SAN DIEGO, SCH MED, DEPT PSYCHIAT, LA JOLLA, CA 92093 USA
[3] UNIV CALIF SAN DIEGO, SCH MED, MED SCI TRAINING PROGRAM, LA JOLLA, CA 92093 USA