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\bibitem{Officefederaldelasantepublique2008} Office f{\'e}d{\'e}ral de la sant{\'e} publique. (2008). \textit{Rapport annuel 2008 du fonds de pr{\'e}vention du tabagisme}. Berne: Office f{\'e}d{\'e}ral de la sant{\'e} publique (OFSP).

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