1. Department of Epidemiology, University of Washington, Seattle, Washington, USA
2. Department of Epidemiology and Biostatistics, Drexel University, Philadelphia, Pennsylvania, USA
3. Sections of Preventive Medicine and Epidemiology and Cardiology, Department of Medicine Boston University School of Medicine, Boston, Massachusetts, USA
4. Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, USA
5. Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, Johns Hopkins University, Baltimore, Maryland, USA
6. Department of Biostatistics, University of Washington, Seattle, Washington, USA