[1] Univ Alberta, Coll Hlth Sci, Fac Med & Dent, Div Palliat Care Med,Dept Oncol, 8440 112 St NW, Edmonton, AB T6G 2B7, Canada
[2] Univ Alberta, Coll Hlth Sci, Fac Med & Dent, Dept Family Med, Edmonton, AB, Canada
[3] Royal Alexandra Hosp, Family Med, Edmonton, AB, Canada
[4] Univ Alberta, Coll Hlth Sci, Fac Nursing, Edmonton, AB, Canada
[5] Queens Univ, Fac Hlth Sci, Dept Med, Div Palliat Med, Kingston, ON, Canada
[6] Cross Canc Inst, Dept Symptom Control & Palliat Care, Edmonton, AB, Canada