[1] Univ Calgary, Dept Oncol, Calgary, AB, Canada
[2] Univ Calgary, Dept Clin Neurosci, Calgary, AB, Canada
[3] Univ Calgary, Dept Med, Calgary, AB, Canada
[4] Univ Calgary, Div Cardiol, Libin Cardiovasc Inst Alberta, Calgary, AB, Canada
[5] Univ Calgary, Dept Oncol, Calgary, AB, Canada
[6] Univ Calgary, Dept Community Hlth Sci, Calgary, AB, Canada
[7] Univ Alberta, Dept Oncol, Edmonton, AB, Canada
[8] Covenant Hlth Palliat Inst, Edmonton, AB, Canada