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Effects of a Brief Web-Based "Social Norms"-Intervention on Alcohol, Tobacco and Cannabis Use Among German University Students: Results of a Cluster-Controlled Trial Conducted at Eight Universities
Pischke, Claudia Ruth ; Helmer, S. M. ; Pohlabeln, H. ; Muellmann, S. ; Schneider, S. ; Reintjes, R. ; Schmidt-Pokrzywniak, A. ; Girbig, M. ; Krämer, Alexander ; Icks, A. ; Walter, U. ; Zeeb, Hajo
In: Frontiers in Public Health, Jg. 9

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