[1] WASHINGTON UNIV,SCH MED,DEPT NEUROL,ST LOUIS,MO 63110
[2] WASHINGTON UNIV,SCH MED,MCDONNELL CTR STUDIES HIGHER BRAIN FUNCT,ST LOUIS,MO 63110
[3] WASHINGTON UNIV,SCH MED,DEPT NEUROSURG NEUROL,ST LOUIS,MO 63110
[4] WASHINGTON UNIV,SCH MED,EDWARD MALLINCKRODT INST RADIOL,ST LOUIS,MO 63110