1. Department of Physical Medicine and Rehabilitation, JFK Johnson Rehabilitation Institute, Edison, New Jersey, USA
2. Department of Physical Medicine and Rehabilitation, Rutgers Robert Wood Johnson Medical School, New Brunswick, New Jersey, USA
3. Department of Physical Medicine and Rehabilitation, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
4. Department of Physical Medicine and Rehabilitation, Shirley Ryan AbilityLab, Chicago, Illinois, USA