1. 1Kessler Foundation, West Orange, New Jersey
2. 2Rutgers New Jersey Medical School, Newark, New Jersey
3. 3Department of Physical Medicine and Rehabilitation, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
4. 4Department of Rehabilitation and Human Performance, Icahn School of Medicine at Mount Sinai, New York
5. 5Craig Hospital, Englewood, Colorado
6. 6Case Western University, Cleveland, Ohio
7. 7MetroHealth System, Cleveland, Ohio
8. 8Rancho Los Amigos National Rehabilitation Center, Downey, California