1. Division of Cardiovascular Medicine Department of Medicine School of Medicine and Public Health University of Wisconsin Madison WI
2. Department of Medicine Division of Cardiovascular Medicine William S. Middleton Memorial Veterans Hospital Madison WI
3. Department of Biostatistics University of Washington Seattle WA
4. Division of Cardiology Department of Medicine Johns Hopkins University Baltimore MD
5. Departments of Environmental & Occupational Health Sciences, Medicine, and Epidemiology University of Washington Seattle WA