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English
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For å registrere i Cristin må du være vitenskapelig eller administrativt ansatt.
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Nordfjærn, Trond; Edland-Gryt, Marit; Bretteville-Jensen, Anne Line; Buvik, Kristin; Gripenberg, Johanna. Recreational drug use in the Oslo nightlife setting: study protocol for a cross-sectional time series using biological markers, self-reported and qualitative data. BMJ Open 2016 ;Volum 6.(4) FHI
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