[1] Univ Arkansas Med Sci, Dept Hlth Behav & Hlth Educ, Fay W Boozman Coll Publ Hlth, Coll Publ Hlth, Little Rock, AR 72205 USA
[2] Univ Arkansas Med Sci, Coll Hlth Related Profess, Little Rock, AR 72205 USA
[3] Univ Arkansas Med Sci, Coll Nursing, Little Rock, AR 72205 USA
[4] UMDNJ Robert Wood Johnson Med Sch, Div Gen Internal Med, Tobacco Dependence Program, New Brunswick, NJ USA