1. The Cecil G. Sheps Center for Health Services Research University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
2. School of Social Work University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
3. Gillings School of Global Public Health University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
4. Department of Family Medicine, School of Medicine University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
5. School of Public Health Brown University Providence Rhode Island USA
6. School of Public Health Portland State University Portland Oregon USA