1. Division of Epidemiology and Community Health University of Minnesota Minneapolis MN USA
2. Division of Cardiology University of Minnesota Minneapolis MN USA
3. Department of Geriatrics and Gerontology University of Mississippi Medical Center Jackson MS USA
4. Department of Neurology University of Mississippi Medical Center Jackson MS USA
5. Department of Neurology Johns Hopkins University Baltimore MD USA
6. Division of Pulmonary and Critical Care Medicine Johns Hopkins University Baltimore MD USA
7. Department of Epidemiology and Biostatistics University of Arizona Tucson AZ USA
8. Department of Neurology Mayo Clinic Rochester MN USA
9. Department of Epidemiology, Rollins School of Public Health Emory University Atlanta GA USA