1. Department of Radiology, University of Southern California, Keck School of Medicine, Los Angeles, USA, CA
2. Department of Neurointerventional Radiology, Renown Regional Medical Center, Reno, USA, NV
3. Department of Critical Care, Renown Regional Medical Center, Reno, USA, NV
4. Department of Neurology, Renown Regional Medical Center, Reno, USA, NV