Stanley H Appel1, Carmel Armon2. 1. From the Houston Methodist Neurological Institute (S.H.A.), Houston, TX; and Assaf Harofeh Medical Center (C.A.), Zerifin, Israel. sappel@houstonmethodist.org. 2. From the Houston Methodist Neurological Institute (S.H.A.), Houston, TX; and Assaf Harofeh Medical Center (C.A.), Zerifin, Israel.