1 The Cecil G. Sheps Center for Health Services Research, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA. Electronic address: Sheryl_Zimmerman@unc.edu.
2 The Cecil G. Sheps Center for Health Services Research, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
3 The Cecil G. Sheps Center for Health Services Research, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
4 Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
5 School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
6 The Cecil G. Sheps Center for Health Services Research, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.