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\bibitem{Officefederaldelasantepublique+BundesamtfuerGesundheit1998} Office f{\'e}d{\'e}ral de la sant{\'e} publique, \& Bundesamt f{\"u}r Gesundheit. (1998). \textit{Interpr{\'e}tation de l{\textquoteright}{\'e}valuation sommaire de la campagne de l{\textquoteright}OFSP {\textquotedblleft}Drogue : rester lucide{\textquotedblright}}. Berne; Bern: Office f{\'e}d{\'e}ral de la sant{\'e} publique (OFSP); Bundesamt f{\"u}r Gesundheit (BAG).

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