1. BC Cancer–Center for the Southern Interior, Kelowna, British Colombia, Canada.
2. Department of Supportive Care, Princess Margaret Cancer Center, University Health Network, Toronto, Ontario, Canada.
3. Department of Biostatistics, Princess Margaret Cancer Center, University Health Network, Toronto, Ontario, Canada.
4. Division of Medical Oncology, Department of Medicine, University of Toronto, Toronto, Ontario, Canada.
5. Princess Margaret Cancer Research Institute, University Health Network, Toronto, Ontario, Canada.