1. University of California-San Diego School of Medicine, San Diego, California
2. Department of Family and Preventive Medicine, University of California-San Diego, San Diego, California
3. Universidade de Sao Paulo, Sau Paulo, Brazil
4. Division of Preventive Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
5. Division of Preventive Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, and Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts
6. Division of Preventive Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts; and Department of Ambulatory Care and Prevention, Harvard Medical School, Boston, Massachusetts