1. Department of Sociology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA.
2. Center for Reducing Health Disparities, College of Public Health, University of Nebraska Medical Center, Omaha, Nebraska, USA.
3. Department of Health Promotion, Social & Behavioral Health, University of Nebraska Medical Center, Omaha, Nebraska, USA.
4. Department of Geography and University of Utah, Salt Lake City, Utah, USA.
5. Department of Sociology, University of Utah, Salt Lake City, Utah, USA.