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Effects of a Social-Network Method for Group Assignment Strategies on Peer-Led Tobacco Prevention Programs in Schools

Thomas W. Valente, PhD, Beth R. Hoffman, MPH, Annamara Ritt-Olson, MA, Kara Lichtman, MA and C. Anderson Johnson, PhD

Thomas W. Valente, Beth R. Hoffman, Annamara Ritt-Olson, Kara Lichtman, and C. Anderson Johnson are with the Department of Preventive Medicine, School of Medicine, University of Southern California, Alhambra, Calif.



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  		FIGURE 1—— Group assignments for 1 class.

Note. One hundred nineteen links are not shown because they did not result in group assignments.

 




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