[1] Virginia Commonwealth Univ, Dept Psychol, Box 2018, Richmond, VA 23284 USA
[2] Univ North Carolina Chapel Hill, Div Pharmaceut Outcomes & Policy, Chapel Hill, NC USA
[3] Univ Michigan, Dept Epidemiol, Ann Arbor, MI 48109 USA
[4] Univ Michigan, Dept Family Med, Ann Arbor, MI 48109 USA