1. Department of Physical Medicine and Rehabilitation, Indiana University School of Medicine and Rehabilitation Hospital of Indiana, Indianapolis, Indiana, USA.
2. Research Department, Craig Hospital, Englewood, Colorado, USA.
3. Traumatic Brain Injury Model Systems National Data and Statistical Center, Englewood, Colorado, USA.
4. Department of Rehabilitation Medicine, Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
5. Department of Physical Medicine & Rehabilitation, Ohio State University, Columbus, Ohio, USA.
6. National Institute on Disability, Independent Living, and Rehabilitation Research, Administration for Community Living, Department of Health and Human Services, Washington, DC, USA.
7. Traumatic Brain Injury Team, Division of Injury Prevention, National Center for Injury Prevention and Control, Centers for Disease Control and Prevention, Atlanta, Georgia, USA.