1. Mandell Center for Multiple Sclerosis, Mount Sinai Rehabilitation Hospital, Trinity Health Of New England, Hartford, CT, USA
2. Department of Rehabilitative Medicine, Frank H. Netter MD School of Medicine, Quinnipiac University, North Haven, CT, USA
3. Department of Medical Sciences, Frank H. Netter MD School of Medicine, Quinnipiac University, North Haven, CT, USA
4. Department of Neurology, University of Connecticut School of Medicine, Farmington, CT, USA
5. Multiple Sclerosis Center of Excellence West, Seattle, WA, USA
6. Rehabilitation Care Service, VA Puget Sound Health Care System, Seattle, WA, USA
7. Department of Rehabilitation Medicine, University of Washington, Seattle, WA, USA
8. Department of Epidemiology, University of Washington, Seattle, WA, USA
9. Neuroscience Program, Trinity College, Hartford, CT, USA
10. Department of Psychology, Trinity College, Hartford, CT, USA