[1
]
Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor,
MI; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI. Electronic
address: janeh@umich.edu.
[2
]
Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI.
[3
]
Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor,
MI.
[4
]
School of Health Sciences, Oakland University, Rochester, MI.