1. Cecil G. Sheps Center for Health Services Research; University of North Carolina at Chapel Hill; Chapel Hill North Carolina
2. School of Social Work; University of North Carolina at Chapel Hill; Chapel Hill North Carolina
3. East Carolina University; Brody School of Medicine; Greenville North Carolina
4. Duke Clinical Research Institute; School of Medicine; Duke University; Durham North Carolina
5. Department of Family Medicine; University of North Carolina at Chapel Hill; Chapel Hill North Carolina