1 Andrea C. Enzinger, MD, Division of Population Sciences, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA; Kaushik Ghosh, PhD, The New England Bureau of Economic Research, Cambridge, MA; Nancy L. Keating, MD, MPH, The Department of Healthcare Policy, Harvard Medical School, Boston, MA, The Division of General Internal Medicine and Primary Care, Department of Medicine, Brigham and Women's Hospital, Boston, MA; David M. Cutler, PhD, The New England Bureau of Economic Research, Cambridge, MA, The Department of Healthcare Policy, Harvard Medical School, Boston, MA, The Department of Economics, Harvard University, Boston, MA, The Department of Health Policy and Management, Harvard T.H. Chan School of Public Health, Boston, MA; Mary Beth Landrum, PhD, The Department of Healthcare Policy, Harvard Medical School, Boston, MA; and Alexi A. Wright, MD, MPH, Division of Population Sciences, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA.