[1] Queens Univ, Sch Rehabil Therapy, Louise D Acton Bldg,31 George St, Kingston, ON K7L 3N6, Canada
[2] Queens Univ, Dept Family Med, 220 Bagot St, Kingston, ON K7L 3G2, Canada
[3] Inst Nacl Geriatria, Geriatr & Epidemiol Res Dept, Res Div, Perifer Sur 2767, Mexico City 10200, DF, Mexico
[4] Dalhousie Univ, Geriatr Med Res, 1427-5955 Vet Mem Lane, Halifax, NS B3H 2E1, Canada
[5] Nova Scotia Hlth Author, 1427-5955 Vet Mem Lane, Halifax, NS B3H 2E1, Canada
[6] Univ Montreal, Dept Social & Prevent Med, CP 6128,Succursale Ctr Ville, Montreal, PQ H3C 3J7, Canada
[7] Le Moyne Univ Sherbrooke, Hop Charles, Dept Community Hlth Sci Ctr Rech, Longueuil, PQ J4K 0A8, Canada