1. Section of Cardiovascular Medicine, Department of Internal Medicine, Yale University School of Medicine, 330 Cedar St, Boardman 110, P.O. Box 208056, New Haven, Connecticut 06520-8056, USA
2. Center for Outcomes Research and Evaluation, Yale-New Haven Hospital, 1 Church Street, Suite 200, New Haven, Connecticut 06510-3330, USA
3. Department of Internal Medicine, Yale University School of Medicine, 330 Cedar St, Boardman 110, P.O. Box 208056, New Haven, Connecticut 06520-8056, USA
4. National Clinical Research Center of Cardiovascular Diseases, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, 167 Beilishi Road, Beijing 100037, China
5. Department of Medicine, Brigham and Women’s Hospital, 75 Francis Street, Boston, Massachusetts 02115, USA
6. Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Campus Box B132, 12401 East 17th Avenue, Room 522, Aurora, Colorado 80045, USA
7. Saint Luke’s Mid America Heart Institute/University of Missouri-Kansas City, 4401 Wornall Road, Kansas City, Missouri 64111, USA
8. Robert Wood Johnson Foundation Clinical Scholars Program, Department of Internal Medicine, Yale University School of Medicine, 333 Cedar Street, SHM I-456 P.O. Box 208088, New Haven, Connecticut 06520, USA
9. Department of Health Policy and Management, Yale School of Public Health, 60 College Street, P.O. Box 208034, New Haven CT 06520-8034, USA