1 Program in Physical Therapy and Department of Neurology, Wayne State University, Detroit, Michigan, USA.
2 Centre for Trials Research, Cardiff University, Cardiff, UK.
3 Department of Physical Therapy, Stony Brook University, Stony Brook, New York, USA.
4 Department of Rehabilitation & Regenerative Medicine (Program in Physical Therapy), GH Sergievsky Center, Columbia University Irving Medical Center, New York, New York, USA.
5 Division of Physical Therapy, School of Health and Rehabilitation Sciences, Ohio State University, Columbus, Ohio, USA.
6 Department of Biobehavioral Sciences, Teachers College, Columbia University, New York, New York, USA.