Amrou Sarraj1, James C Grotta2. 1. Department of Neurology University of Texas-Houston, 6410 Fannin Street, Houston, TX, 77030, USA. 2. Department of Neurology University of Texas-Houston, 6410 Fannin Street, Houston, TX, 77030, USA. Electronic address: james.c.grotta@uth.tmc.edu.