1. Director of Research, Department of Medicine, Fairfax Medical Campus Inova Health System, Falls Church, VA, USA
2. Beatty Center for Liver Disease and Obesity, Fairfax Medical Campus Inova Health System, Falls Church, VA, USA
3. American Institute for Research, Washington, DC, USA
4. Rehabilitation Medicine Department, Clinical Center, National Institutes of Health, Bethesda, MD, USA
5. HSR&D Center of Innovation on Disability and Rehabilitation Research (CINDRR), Tampa, FL, USA
6. Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, PA, USA