1. Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, UCLA (University of California, Los Angeles)
2. Department of Health Policy and Management, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
3. Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
4. Department of Health Policy, London School of Economics and Political Science, London, England
5. Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
6. Veterans Affairs Healthcare System, Boston, Massachusetts