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Banaschewski T, Coghill D, Santosh P, et al. (March 2008). "[Long-acting medications for the treatment of hyperkinetic disorders - a systematic review and European treatment guideline. Part 1: overview and recommendations]". Zeitschrift für Kinder- und Jugendpsychiatrie und Psychotherapie (in German). 36 (2): 81–94, quiz 94–5. doi:10.1024/1422-4917.36.2.81. PMID18622938.