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Auteur P. W. CALLAS |
Documents disponibles écrits par cet auteur (2)
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Article : Périodique
J. R. HUGHES ; J. R. FINGAR ; A. J. BUDNEY ; S. NAUD ; J. E. HELZER ; P. W. CALLAS |Background: Most of the harm from marijuana use is experienced by daily users. Despite this, there has not been a detailed prospective description of daily marijuana use. Methods: We recruited daily marijuana users (n = 142) by internet ads, C[...]Périodique
P. W. CALLAS ; B. S. FLYNN ; J. K. WORDEN | 2004ENGLISH : This study was conducted to identify factors associated with alcohol use among early adolescents. A survey was administered to all Grade 7 and 8 students in 16 Vermont school districts. The questionnaire covered demographics, alcohol[...]