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Spronk, Desirée B and van Beek, Ruben J J and Smits, Robin L A and Andree, Rosa and den Hollander, Wouter and Freeman, Tom P and Curran, H Valerie and Waldron, Jon and Grabski, Meryem and Blankers, Matthijs and van Laar, Margriet W (2026) Patterns and mood effects of concomitant polydrug use of ecstasy and alcohol in Dutch and British electronic dance event visitors: an EMA study. European Addiction Research, Early online, pp. 1-12. https://doi.org/10.1159/000552706.