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Titre : | BMC Medical Research Methodology, Vol.14, n°58. - April 2014 |
Type de document : | Bulletin |
Paru le : | 27/04/2014 |
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Ajouter le résultat dans votre panierArticle : Périodique
BACKGROUND: Prevalence estimates of drug use, or of its consequences, are considered important in many contexts and may have substantial influence over public policy. However, it is rarely possible to simply count the relevant individuals, in pa[...]