1. Center for Social Epidemiology and Population Health, School of Public Health, University of Michigan, Ann Arbor, MI, USA
2. Alabama Research Institute on Aging and Department of Psychology, University of Alabama, Tuscaloosa, AL, USA
3. Statistics Consulting Lab, Bio5 Institute, University of Arizona, Tucson, AZ, USA
4. Burgio Geriatric Consulting, Tuscaloosa, AL, USA