[1] WASHINGTON UNIV, SCH MED, DEPT NEUROL & NEUROL SURG NEUROL, ST LOUIS, MO 63110 USA
[2] WASHINGTON UNIV, SCH MED, DEPT ANAT & NEUROBIOL, ST LOUIS, MO 63110 USA
[3] CORNELL UNIV, MED CTR, NEUROBIOL LAB, NEW YORK, NY 10021 USA
[4] NYU, DEPT PSYCHIAT, NEW YORK, NY 10016 USA
[5] UNIV TEXAS, HLTH SCI CTR, SW MED SCH, DEPT PSYCHIAT, DALLAS, TX 75235 USA