[1] MASSACHUSETTS GEN HOSP, DEPT ANESTHESIOL, BOSTON, MA 02114 USA
[2] MASSACHUSETTS GEN HOSP, DEPT PSYCHIAT, BOSTON, MA 02114 USA
[3] HARVARD UNIV, SCH MED, DEPT PSYCHIAT, BOSTON, MA 02115 USA
[4] HARVARD UNIV, SCH MED, DEPT ANESTHESIOL, BOSTON, MA 02115 USA
[5] UPJOHN CO, CENT NERVOUS SYST DIS, KALAMAZOO, MI 49001 USA
[6] TUFTS UNIV, NEW ENGLAND MED CTR, DEPT CLIN PHARMACOL, BOSTON, MA 02111 USA
[7] TUFTS UNIV, SCH MED, DEPT MED, BOSTON, MA 02111 USA
[8] BRANDEIS UNIV, FLORENCE HELLER SCH, WALTHAM, MA 02154 USA
[9] MEM HOSP, DEPT MED, WORCESTER, MA USA
[10] UNIV MASSACHUSETTS, SCH MED, DEPT MED, WORCESTER, MA 01605 USA
[11] MASSACHUSETTS MENTAL HLTH CTR, NEUROPSYCHOPHARMACOL LAB, BOSTON, MA 02115 USA
[12] NEW ENGLAND DEACONESS HOSP, DEPT PATHOL, PSYCHIAT CHEM LAB, BOSTON, MA 02215 USA