[1] ROYAL FREE HOSP,SCH MED,DEPT ANAT & DEV BIOL,LONDON NW3 2PF,ENGLAND
[2] INST PSYCHIAT,DEPT NEUROL,LONDON SE5 8AF,ENGLAND
[3] INST PSYCHIAT,DEPT NEUROPATHOL,LONDON SE5 8AF,ENGLAND
[4] ST BARTHOLOMEWS & ROYAL LONDON HOSP,SCH MED & DENT,DEPT NEUROL,LONDON E1 1BB,ENGLAND