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Following its publication, an interested reader noticed errors in the referencing of the above manuscript. The authors have agreed that the following errors have been made regarding references 25 and 26. Reference 25, currently listed as ‘Geisler F, Nagl F, Mazur PK, Lee M, Zimber-Strobl U, Strobl LJ, Radtke F, Schmid RM and Siveke JT: Liver-specific inactivation of Notch2, but not Notch1, compromises intrahepatic bile duct development in mice. Hepatology 48: 607–616, 2008’ should be replaced with ‘Hu L, Xue F, Shao M, Deng A and Wei G: Aberrant expression of Notch3 predicts poor survival for hepatocellular carcinomas. Biosci Trends 7: 152–156, 2013.’ In addition, reference 26, currently listed as ‘Chen JY, Feng L, Zhang HL, Li JC, Yang XW, Cao XL, Liu L, Qin HY, Liang YM and Han H: Differential regulation of bone marrow-derived endothelial progenitor cells and endothelial outgrowth cells by the notch signaling pathway. PLoS One 7: e43643, 2012’ should be replaced with ‘Gramantieri L, Giovannini C, Lanzi A, Chieco P, Ravaioli M, Venturi A, Grazi GL and Bolondi L: Aberrant Notch3 and Notch4 expression in human hepatocellular carcinoma. Liver Int 27: 997–1007, 2007. All the authors agree to the changes to the reference list.