[1] Univ Calif San Francisco, Dept Family Hlth Care Nursing, San Francisco, CA 94143 USA
[2] Univ Calif San Francisco, Dept Family & Community Med, San Francisco, CA 94143 USA
[3] Univ Calif San Francisco, Dept Social & Behav Sci, San Francisco, CA 94143 USA
[4] Univ Calif San Francisco, Tobacco Related Dis Rs Program, Off President, San Francisco, CA 94143 USA
[5] Univ San Francisco, Dept Psychol, San Francisco, CA 94117 USA
[6] No Calif Kaiser Permanente, San Francisco, CA USA