1. Department of Medicine, School of Medicine, University of Washington, Seattle, Washington 98195, USA;
2. Value and Systems Science Lab, School of Medicine, University of Washington, Seattle, Washington 98195, USA
3. Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
4. Center for Health Equity Research and Promotion, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania 19104, USA
5. Department of Medical Ethics and Health Policy, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
6. Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA