1. Department of Physical Medicine and Rehabilitation, Baylor College of Medicine and Harris Health System, Houston, TX, USA
2. Brain Injury Research Center, Houston, TX, USA
3. Beth K. and Stuart C. Yudofsky Division of Neuropsychiatry, Department of Psychiatry, Baylor College of Medicine, Houston, TX, USA
4. Department of Physical Medicine and Rehabilitation, Wayne State University, Rehabilitation Institute of Michigan, Detroit, MI, USA
5. Moss Rehabilitation Research Institute, Elkins Park, PA, USA
6. School of Public Health- Biostatistics Department, University of Texas Health Sciences Center at Houston, Houston, TX, USA