1. Department of Neurology, University of California, San Francisco, California, USA.
2. Department of Neurological Surgery, University of California, San Francisco, California, USA.
3. Department of Radiology, Division of Interventional Radiology University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA.
4. Department of Radiology, Oregon Health and Science University, Portland, Oregon, USA.
5. Donald D. Trunkey Center for Civilian and Combat Casualty Care, Oregon Health and Science University, Portland, Oregon, USA.
6. Department of Surgery, University of Chicago, Chicago, Illinois, USA.