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\bibitem{FondationPhenix1996} Fondation Ph{\'e}nix. (1996). \textit{M{\'e}thadone: r{\'e}sultats : {\'e}valuation 1995 de quatre programmes m{\'e}dico-psychosociaux}. Gen{\`e}ve: Editions M{\'e}decine et hygi{\`e}ne.

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