1 Interventional Neuroradiology, Department of Diagnostic Imaging and Image Guided Therapy, The Hospital for Sick Children, University of Toronto, Toronto, Canada. Electronic address: [email protected].
2 Departments of Child Health and Radiology, University of Arizona, Creighton University, Mayo Clinic, Section of Vascular Disorders and Therapeutics, Barrow Neurological Institute at Phoenix Children's Hospital, Phoenix, AZ, USA; School of Biological & Health Systems Engineering, Ira A. Fulton School of Engineering, Arizona State University, Tempe, AZ, USA. Electronic address: [email protected].