1. Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA
2. Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
3. Center for Tobacco Research and Intervention, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
4. Information Systems, BJC Healthcare, St. Louis, MO, USA
5. Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, MO, USA
6. Alvin J. Siteman Cancer Center at Barnes-Jewish Hospital and Washington University School of Medicine, St. Louis, MO, USA