[1] Univ Toronto, Toronto Rehabil Inst, Nauro Rehabil Program, Toronto, ON, Canada
[2] Univ Ottawa, Ottawa Hlth Res Inst, Ottawa, ON K1N 6N5, Canada
[3] Queens Univ, Dept Nursing, Kingston, ON, Canada
[4] McGill Univ, Fac Med, Dept Epidemiol, Montreal, PQ, Canada
[5] Univ Western Ontario, Dept Phys Med & Rehabil, London, ON, Canada