Smoking

• University of California San Francisco Department of Psychiatry — San Francisco, California, United States

• Fred Hutchinson Cancer Research Center — Seattle, Washington, United States

• Weill Cornell Medical College and Weill Cornell Medical Center, Department of Genetic Medicine — New York, United States

• University of Chicago — Chicago, Illinois, United States

• Yale New Haven Hospital Emergency Department — New Haven, Connecticut, United States

• Faculty of Dentistry, University of Malaya — Kuala Lumpur, Petaling Jaya, Malaysia

• University of Texas MD Anderson Cancer Center — Houston, Texas, United States

Not specified

• University of Wisconsin Center for Tobacco Research and Intervention — Madison, Wisconsin, United States

• Ageo Medical Clinic — Saitama, Japan