1 From the Department of Neurology (I.S.), Rabin Medical Center, Petah Tiqva, Israel; and the Department of Neurology (S.R.), University Hospital Basel, Switzerland. isteiner@cc.huji.ac.il.
2 From the Department of Neurology (I.S.), Rabin Medical Center, Petah Tiqva, Israel; and the Department of Neurology (S.R.), University Hospital Basel, Switzerland.