Daniel Duran1, Muhamed Hadzipasic1, Kristopher T Kahle2. 1. From the Departments of Neurosurgery (D.D., K.T.K.), Pediatrics (K.T.K.), and Cellular and Molecular Physiology (K.T.K.), Yale School of Medicine (M.H.), New Haven, CT. 2. From the Departments of Neurosurgery (D.D., K.T.K.), Pediatrics (K.T.K.), and Cellular and Molecular Physiology (K.T.K.), Yale School of Medicine (M.H.), New Haven, CT. kristopher.kahle@yale.edu.