Jeffrey Sonis a, b, ⁎ 
, Donald E. Pathman b, c
, Susan Read d
, Bradley N. Gaynes e
, Courtney Canter f, g
, Patrick Curran h
, Thomas Miller i 
a Department of Social Medicine, School of Medicine, University of North Carolina at Chapel Hill, CB#7240, Chapel Hill, NC 27599-7240, United States
b Department of Family Medicine, CB#7595, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7595, United States
c Cecil G. Sheps Center for Health Services Research, University of North Carolina at Chapel Hill, 725 M.L.K. Jr. Boulevard, Chapel Hill, NC 27516, United States
d Research Center, American College of Physicians, 190 N. Independence Mall West, Philadelphia, PA 19106-1572, United States
e Department of Psychiatry, University of North Carolina at Chapel Hill, 333 S. Columbia Street, Suite 304, MacNider Hall, Chapel Hill, NC 27514, United States
f School of Medicine, University of North Carolina at Chapel Hill, 321 S. Columbia Street, Chapel Hill, NC 27516, United States
g Department of Anthropology, University of North Carolina at Chapel Hill, CB# 3115, 301 Alumni Hall, 207 E. Cameron Avenue, Chapel Hill, NC 27599-3115, United States
h Department of Psychology and Neuroscience, University of North Carolina at Chapel Hill, CB#3270, 235 E. Cameron Avenue, Chapel Hill, NC 27599-3270, United States
i Department of Medicine, University of North Carolina at Chapel Hill, CB#7005, 125 MacNider Hall, Chapel Hill, NC 27599-7005, United States