[1] THOMAS JEFFERSON UNIV,JEFFERSON MED COLL,DEPT PHARMACOL,PHILADELPHIA,PA 19107
[2] UNIV TEXAS,SCH MED,DEPT PHARMACOL,HOUSTON,TX 77025
[3] UNIV TEXAS,SCH MED,DEPT ANAT,HOUSTON,TX 77025
[4] UNIV TEXAS,SCH MED,DEPT NEUROBIOL,HOUSTON,TX 77025
[5] THOMAS JEFFERSON UNIV,DEPT NEUROL,PHILADELPHIA,PA 19107
[6] VET ADM HOSP,MED CTR,NEUROL SERV,WILMINGTON,DE 19805