[1] ROY VICTORIA INFIRM,DEPT MED,NEWCASTLE,ENGLAND
[2] ROY VICTORIA INFIRM,DEPT NEUROL,NEWCASTLE,ENGLAND
[3] ROY VICTORIA INFIRM,DEPT MED STATISTICS,NEWCASTLE,ENGLAND
[4] UNIV NEWCASTLE TYNE,NEWCASTLE TYNE,ENGLAND
[5] NEWCASTEL GEN HOSP,MUSCULAR DYSTROPHY RES LABS,NEWCASTLE TYNE,ENGLAND