An, L. C., Schillo, B. A., Kavanaugh, A. M., Lachter, R. B., Luxenberg, M. G., Wendling, A. H., & Joseph, A. M. (2006). Increased reach and effectiveness of a statewide tobacco quitline after the addition of access to free nicotine replacement therapy. BMJ Group.

An, Lawrence C., Barbara A. Schillo, Annette M. Kavanaugh, Randi B. Lachter, Michael G. Luxenberg, Ann H. Wendling, và Anne M. Joseph. Increased Reach and Effectiveness of a Statewide Tobacco Quitline After the Addition of Access to Free Nicotine Replacement Therapy. BMJ Group, 2006.

An, Lawrence C., et al. Increased Reach and Effectiveness of a Statewide Tobacco Quitline After the Addition of Access to Free Nicotine Replacement Therapy. BMJ Group, 2006.