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It has come to the attention of the authors that in their Research Paper, “Time- and residue-specific differences in histone acetylation induced by VPA and SAHA in AML1/ETO-positive leukemia cells,” published in the February 2013 issue of Epigenetics, the following acknowledgements should have been included: This work was supported by Istituto Toscano Tumori, Associazione Italiana per la Ricerca sul Cancro, Ministero della Salute (Ricerca Finalizzata, grant #RF-TOS-2008-1163728), Regione Toscana (Programma per la Ricerca in Materia di Salute), Associazione Italiana per la Lotta contro le Leucemie e i Linfomi (sezione di Prato), Fondazione Cassa di Risparmio di Volterra, Fondazione Oretta Bartolomei-Corsi.