[1] University of Wisconsin-Madison,Center for Tobacco Research and Intervention, Department of Medicine, School of Medicine and Public Health
[2] School of Medicine and Public Health,Division of General Internal Medicine, Department of Medicine
[3] University of Wisconsin-Madison,Center for Tobacco Research and Intervention, School of Medicine and Public Health
[4] William S. Middleton Memorial Veterans Hospital,Department of Educational Psychology
[5] University of Wisconsin-Madison,undefined
[6] University of Wisconsin-Madison,undefined