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Schueler YB; Koesters M; Wieseler B; Grouven U; Kromp M; Kerekes MF; Kreis J; Kaiser T et al. (2010). «A systematic review of duloxetine and venlafaxine in major depression, including unpublished data». Acta Psychiatrica Scandinavica123 (4): 247-265. PMID20831742. doi:10.1111/j.1600-0447.2010.01599.x.