1. Division of Epidemiology and Community Health, University of Minnesota School of Public Health, Minneapolis, MN
2. School of Nursing, University of Alabama at Birmingham, Birmingham, AL
3. Division of Gerontology, Geriatrics, and Palliative Care, University of Alabama at Birmingham School of Medicine and Birmingham VA Medical Center, Birmingham, AL
4. Division of Biostatistics, University of Minnesota School of Public Health, Minneapolis, MN
5. Department of Urology, University of Minnesota Medical School, Minneapolis, MN
6. Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, Birmingham, AL.