There was an error in the Acknowledgements in the published article. It should state: The authors are grateful to Dr Santiago Martinez-Calvillo, Dr Jorge Milan-Carrillo and Dr Cuauhtéemoc Reyes-Moreno for their great help with equipment, Jorge Hernandez Pena for his contribution to the preliminary stages of this research and also to Francisco Puga-Barraza for the artwork. We are also grateful to Dr Lucas Kuhn from the Swiss Institute for Experimental Cancer Research for his kind donation of the pSPT-fer plasmid used as a positive control in this study. A special thank you is due to all the reviewers for their constructive comments. The author apologizes for any inconvenience caused.