1. Tobacco Research and Treatment Center, Division of General Internal Medicine (DGIM), Department of Medicine, Massachusetts General Hospital (MGH)/Harvard Medical School (HMS), Boston, Massachusetts, USA
2. Department of Psychiatry, MGH/HMS, Boston, Massachusetts, USA
3. Department of Epidemiology & Biostatistics, School of Public Health-Bloomington, Indiana University, Bloomington, Indiana, USA
4. Department of Psychiatry, Vermont Center on Behavior & Health, University of Vermont, Burlington, Vermont, USA
5. Mailman School of Public Health, Columbia University, New York, New York, USA
6. Department of Epidemiology and Biostatistics, Graduate School of Public Health and Health Policy, The City University of New York, New York, New York, USA
7. Ferkauf Graduate School of Psychology, Yeshiva University, Bronx, New York, USA
8. Albert Einstein College of Medicine, Bronx, New York, USA