Smoking Cessation

• Respiratory Research Unit — Cape Town, Western Cape, South Africa
• Synopsis Research — Cape Town, Western Cape, South Africa
• UCT Lung Institute — Cape Town, Western Cape, South Africa
• Dr JA O'Brien — Cape Town, Western Cape, South Africa

• St Paul's Hospital — Vancouver, British Columbia, Canada

• Queen Mary University of London — London, United Kingdom

• Massachusetts General Hospital — Boston, Massachusetts, United States
• Brigham and Women's Hospital — Boston, Massachusetts, United States

Not specified

• Substance Abuse Treatment Center, University of Vermont — Burlington, Vermont, United States

• The Miriam Hospital — Providence, Rhode Island, United States

• University Hospital of Tuebingen Smoking Cessation Research Group — Tübingen, Germany

• Los Angeles Clinical Trials — Burbank, California, United States
• Central Kentucky Research Associates, Inc. — Lexington, Kentucky, United States

• McGill Cardiovascular Health Improvement Program — Montreal, Quebec, Canada