1 Lawson Eng, MD, SM, FRCPC, Division of Medical Oncology and Hematology, Department of Medicine, Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario, Canada, Division of Medical Oncology, Department of Medicine, University of Toronto, Toronto, Ontario, Canada; Rinku Sutradhar, PhD, Cancer Research Program, Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada, Division of Biostatistics, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada; and Monika K. Krzyzanowska, MD, MPH, Division of Medical Oncology and Hematology, Department of Medicine, Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario, Canada, Division of Medical Oncology, Department of Medicine, University of Toronto, Toronto, Ontario, Canada; Cancer Research Program, Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.