[1] COLUMBIA UNIV,PRESBYTERIAN HOSP,NEUROL INST,DEPT MICROBIOL,NEW YORK,NY 10032
[2] COLUMBIA UNIV,PRESBYTERIAN HOSP,NEUROL INST,DEPT NEUROL,NEW YORK,NY 10032
[3] NIH,FOGARTY INT CTR,BETHESDA,MD 20014
[4] NORTHWESTERN UNIV,DEPT ENGN SCI,EVANSTON,IL 60201
[5] NORTHWESTERN UNIV,DEPT PHYS,EVANSTON,IL 60201
[6] COLUMBIA UNIV,PRESBYTERIAN HOSP,NEUROL INST,DEPT HUMAN GENET & DEV,NEW YORK,NY 10032