Affiliation: | 1.Office on Smoking and Health, Centers for Disease Control and Prevention, Mailstop K-50, 3005 Chamblee Tucker Road, Atlanta, GA, 30341, USA ;2.Sheps Center for Health Services Research, University of North Carolina, 725 MLK Jr. Blvd. CB#7590, Chapel Hill, NC, 27599-7590, USA ;3.Barker Bi-Coastal Health Consultants, 3556 Elm Drive, Calabasas, CA, 91302, USA ; |