1. Department of Neurological Surgery, Division of Child Neurology, Doernbecher Children's Hospital, Oregon Health & Science University, Portland, Oregon, USA.
2. Biostatistics and Design Program, Division of Child Neurology, Doernbecher Children's Hospital, Oregon Health & Science University, Portland, Oregon, USA.
3. Department of Pediatrics, Division of Child Neurology, Doernbecher Children's Hospital, Oregon Health & Science University, Portland, Oregon, USA.
4. Veterans Affairs VISN20 Northwest MIRECC, VA Portland Health Care System, Portland, Oregon, USA.
5. Oregon Alzheimer's Disease Research Center, Department of Neurology, Oregon Health and Science University, Portland, OR, USA.
6. Veterans Affairs (V.A.) Northwest (VISN 20) Mental Illness, Research, Education, and Clinical Center (MIRECC), Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA.
7. Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle, Washington, USA.
8. Department of Rehabilitation Medicine, University of Washington School of Medicine, Seattle, Washington, USA.
9. Department of Neurology, University of Washington School of Medicine, Seattle, Washington, USA.