1. Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
2. Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC, USA
3. Department of Nursing, University of North Carolina at Greensboro, Greensboro, NC, USA
4. Department of Medicine, Duke University Medical Center, Durham, NC, USA
5. Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA