1. Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia
2. Cancer Outcomes, Public Policy and Effectiveness Research (COPPER) Center, Yale School of Medicine, New Haven, Connecticut
3. Abramson Cancer Center, University of Pennsylvania, Philadelphia
4. Division of Medical Oncology, Department of Internal Medicine, The Ohio State University, Columbus
5. Section of General Internal Medicine, Department of Medicine, Yale School of Medicine, New Haven, Connecticut