1. Lown Institute, Brookline, Massachusetts
2. Menzies Centre for Health Policy, Sydney School of Public Health, University of Sydney, Sydney, New South Wales, Australia
3. Department of Medical Ethics and Health Policy, Perelman School of Medicine, The University of Pennsylvania, Philadelphia
4. Division of General Internal Medicine, Perelman School of Medicine, The University of Pennsylvania, Philadelphia
5. Center for Health Equity Research and Promotion, Corporal Michael J. Crescenz Veterans Administration Medical Center, Philadelphia, Pennsylvania
6. Centre for Health Policy, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia
7. University of Southern California, Brookings Schaeffer Initiative for Health Policy, The Brookings Institution, Washington, DC