[1] Univ British Columbia, Dept Phys Therapy, Vancouver, BC V5Z 1M9, Canada
[2] Univ British Columbia, Grad Program Rehabil Sci, Vancouver, BC V5Z 1M9, Canada
[3] GF Strong Rehabil Ctr, Vancouver, BC, Canada
[4] Hong Kong Polytech Univ, Dept Rehabil Sci, Hong Kong, Hong Kong, Peoples R China