1. Division of Cardiovascular Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California
2. Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
3. Center for Health Policy, Department of Medicine, Stanford University, Stanford, California
4. Center for Primary Care and Outcomes Research, Department of Medicine, Stanford University, Stanford, California
5. Veterans Affairs Palo Alto Health Care System, Palo Alto, California