1. Norton Neuroscience Center (SRD, TY), Norton Healthcare, Louisville, Kentucky; Division of Neurological Surgery (PN, YCH, AAA), Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona; Swedish Medical Center (DFF), Englewood, Colorado; Division of Neurosurgery and Neuroradiology (DF), Cerebrovascular Center, State University of New York at Stony Brook, Stony Broo
2. Abuja, Nigeria