1. Department of Medicine, University of Texas Health Science Center at San Antonio San Antonio, Texas
2. Department of Public Health Sciences, Bowman Gray School of Medicine Winston-Salem, North Carolina
3. Department of Medicine, School of Medicine, University of Southern California Los Angeles, California
4. Department of Preventive Medicine/Biometrics, University of Colorado School of Medicine Denver, Colorado
5. Department of Medicine, University of Kuopio Kuopio, Finland
6. Kaiser Permanente, Division of Research Oakland, California
7. Division of Epidemiology and Clinical Applications, National Institute of Health+National Heart, Lung and Blood Institute Bethesda, Maryland
8. Department of Physiology and Biophysics, School of Medicine, University of Southern California Los Angeles, California