1. Department of Family Health Care Nursing, University of California, San Francisco, California
2. Department of Family and Community Medicine, University of California, San Francisco, California
3. Department of Social and Behavioral Science, University of California, San Francisco, California
4. Tobacco Related Disease Research Program, Office of the President, University of California, San Francisco, California
5. Department of Psychology, University of San Francisco, San Francisco, California
6. Northern California Kaiser Permanente, San Francisco, California