[1] Univ North Carolina Greensboro, Dept Publ Hlth Educ, Greensboro, NC USA
[2] Wake Forest Sch Med, Dept Social Sci & Hlth Policy, Winston Salem, NC USA
[3] Wake Forest Sch Med, Div Publ Hlth Sci, Dept Biostat Sci, Winston Salem, NC USA
[4] Wake Forest Sch Med, Dept Social Sci & Hlth Policy, Div Publ Hlth Sci, Winston Salem, NC USA