[1] Univ Alberta, Fac Nursing, Edmonton, AB, Canada
[2] Simon Fraser Univ, Dept Gerontol, Vancouver, BC, Canada
[3] Mem Univ, Div Community Hlth & Humanities, St John, NF, Canada
[4] Univ Fed Sao Carlos, Lab Human Dev & Cognit, Sao Paulo, Brazil
[5] Univ Fed Itajuba, Fac Med, Itajuba, Brazil
[6] Inst Univ, ISPA, William James Ctr Res, Lisbon, Portugal
[7] Edmonton Clin Hlth Acad, 11405-87 Ave, Edmonton, AB T6G 1C9, Canada