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\bibitem{Schlegel+SedioliMaritz2000} Schlegel, F., \& Sedioli Maritz, C. (2000). \textit{Programme national VIH et sida : Rapport de synth{\`e}se des plates-formes 1999 {\`a} 2003}. Berne: Office f{\'e}d{\'e}ral de la sant{\'e} publique (OFSP).

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