Implementation of an “opt-out” tobacco treatment program in six hospitals in South Carolina oleh K. Michael Cummings, Vincent Talbot, Avery Roberson, Asia A. Bliss, Emily Likins, Naomi C. Brownstein, Stephanie Stansell, Demetress Adams-Ludd, Bridget Harris, David Louder, Edward McCutcheon, Rami Zebian, Alana M. Rojewski, Benjamin A. Toll