Is implementation of the 5 A's of smoking cessation at community mental health centers effective for reduction of smoking by patients with serious mental illness? - Dixon LB; Medoff D; Goldberg R; Lucksted A; Kreyenbuhl J; DiClemente C; Potts W; Leith J; Brown C; Adams C; Afful J; Dixon, Lisa B; et al. (American Journal on Addictions, 2009)