1. Division of Epidemiology and Community Health; School of Public Health; University of Minnesota; Minneapolis MN USA
2. Public Health; Department of Social Medicine; Osaka University Graduate School of Medicine; Osaka Japan
3. Department of Health and Human Services; Epidemiology Branch; National Institute of Environmental Health Sciences; National Institutes of Health; Research Triangle Park NC USA
4. Departments of Medicine and Pathology; University of Vermont College of Medicine; Burlington VT USA
5. Department of Health Sciences Research; Mayo Clinic; Rochester MN USA
6. Department of Epidemiology; Gillings School of Global Public Health; University of North Carolina; Chapel Hill NC USA
7. Department of Epidemiology; University of Washington; Seattle WA USA