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\bibitem{Zeltner1999} Zeltner, T. (1999). \textit{Rapport du groupe d{\textquoteright}experts de l{\textquoteright}OMS charg{\'e} d{\textquoteright}{\'e}valuer les essais suisses de prescription m{\'e}dicale d{\textquoteright}h{\'e}ro{\"\i}ne; point de vue de l{\textquoteright}OFSP}. Berne: Office f{\'e}d{\'e}ral de la sant{\'e} publique (OFSP).

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