1. Department of Medicine (Division of Hematology) and Department of Neurology, University of Washington School of Medicine, Seattle, Washington, USA
2. Department of Neurology, Brain Research Institute, Niigata University, Niigata, Japan
3. Department of Surgery, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
4. Scripps Genomic Medicine, The Scripps Translational Science Institute, La Jolla, California, USA
5. Department of Neurosurgery, National Hospital Organization, Kyoto Medical Center, Kyoto, Japan
6. Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, California, USA