[1] Univ Hlth Network, Dept Support Care, Princess Margaret Canc Ctr, 620 Univ Ave,12th Floor, Toronto, ON M5G 2C1, Canada
[2] Sheba Med Ctr, Oncol Inst, Palliat Care Serv, Ramat Gan, Israel
[3] Univ Toronto, Div Palliat Med, Toronto, ON, Canada
[4] Univ Toronto, Div Med Oncol, Dept Med, Toronto, ON, Canada
[5] Univ Toronto, Div Palliat Care, Dept Family & Community Med, Toronto, ON, Canada