Stanford Stop Smoking Program, San Jose, California, United States
Virginia Commonwealth University, Richmond, Virginia, United States
U of Texas Medical Branch Galveston, Galveston, Texas, United States
Cincinnati Addiction Research Center, Cincinnati, Ohio, United States
New York VA Medical Center, New York, New York, United States
Boston University Medical Center, Boston, Massachusetts, United States
U of CA, San Francisco, San Francisco, California, United States
University of Texas Health Science Center, San Antonio, Texas, United States
University of Texas Hlth Sci Ctr San Ant, San Antonio, Texas, United States
UCLA Integrated Substance Abuse Program, Los Angeles, California, United States
Uniformed Services University of Health Science, Bethesda, Maryland, United States
New York University, School of Medicine, New York, New York, United States
UCLA Integrated Substance Abuse Program, Los Angeles, California, United States
University California, San Francisco, San Francisco, California, United States