[1] Simon Fraser Univ, Dept Geog, Burnaby, BC V5A 1S6, Canada
[2] McMaster Univ, Sch Geog & Earth Sci, Hamilton, ON, Canada
[3] Univ Victoria, Sch Nursing & Ctr Aging, Victoria, BC V8W 2Y2, Canada
[4] McGill Univ, Div Palliat Care, Dept Oncol, Quebec City, PQ, Canada
[5] McGill Univ, Dept Med, Quebec City, PQ, Canada
[6] Univ Victoria, Ctr Aging, Victoria, BC V8W 2Y2, Canada
[7] McMaster Univ, Dept Clin Epidemiol & Biostat, Hamilton, ON, Canada