[1] UNIV TEXAS,SCH MED,DEPT PHARMACOL,HOUSTON,TX 77025
[2] UNIV TEXAS,SCH MED,DEPT NEUROBIOL,HOUSTON,TX 77025
[3] UNIV TEXAS,SCH MED,DEPT ANAT,HOUSTON,TX 77025
[4] UNIV ARIZONA,COLL MED,DEPT NEUROL,TUCSON,AZ 85721
[5] UNIV ARIZONA,COLL MED,DEPT PHARMACOL,TUCSON,AZ 85721