1. Department of Internal Medicine, College of Medicine, The Ohio State University, Center for Tobacco Research, The Ohio State University Comprehensive Cancer Center , Columbus, OH , USA
2. Department of Epidemiology and Biostatistics, College of Human Medicine, Michigan State University , East Lansing, MI , USA
3. Department of Medicine, Division of Hematology/Oncology/Palliative Care, and Carbone Cancer Center, University of Wisconsin School of Medicine , Madison, WI , USA
4. Department of Communication Studies, Northwestern University , Evanston, IL , USA
5. Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center , Columbus, OH , USA
6. Behavioral Sciences, Rutgers Cancer Institute of New Jersey, Rutgers The State University of New Jersey , New Brunswick, NJ , USA