1. Research and Evaluation Department, Kaiser Permanente Southern California, Pasadena
2. National Clinician Scholars Program, Department of Emergency Medicine, University of California, Los Angeles
3. Division of Cardiology, Department of Medicine, School of Medicine, University of California, San Francisco
4. Editor, JAMA Internal Medicine
5. Division of Cardiology, Los Angeles Medical Center, Kaiser Permanente Southern California, Los Angeles
6. Knight Cardiovascular Institute, Oregon Health and Science University, Portland
7. School of Health and Related Research, The University of Sheffield, Sheffield, United Kingdom
8. Leonard Davis Institute of Health Economics, Department of Emergency Medicine, University of Pennsylvania, Philadelphia