1. Department of Medicine, University of California, San Francisco
2. Department of Bioengineering & Therapeutic Sciences, University of California, San Francisco
3. Division of Prevention and Rehabilitation, University of Ottawa Heart Institute, Ottawa, Ontario, Canada
4. Health Behaviour Research Centre, Department of Epidemiology and Public Health, University College, London, United Kingdom
5. Nicotine Dependence Center and General Internal Medicine, Mayo Clinic, Rochester, Minnesota
6. Department of Preventive Cardiology, Oslo University Hospital, Oslo, Norway
7. Global Product Development, Pfizer, New York, New York
8. Department of Psychiatry, University of California, San Diego