1. Center for Tobacco
Control Research
and Education, University of California, San Francisco, California, United States
2. Tobacco Dependence Research
Unit, Queen Mary University of London,
London, U.K.
3. Department of
Medicine, Division
of Clinical Pharmacology and Experimental Therapeutics, Medical Service,
San Francisco General Hospital Medical Center, University of California, San Francisco, California, United States
4. Department of Bioengineering & Therapeutic Sciences, Division of Clinical Pharmacology and Experimental Therapeutics, Medical Service, San Francisco General Hospital Medical Center, University of California, San Francisco, California, United States