Retraction: 3D Bio-Printing Review (IOP Conf. Ser.: Mater. Sci. Eng. 301 012023)

This article has been retracted by IOP Publishing on 08 September 2021 following an allegation that a number of figures were reproduced from other sources without copyright or permission. Figures 1, 2a and 2b appear to have been taken from [1], and figures 2c and 2d appear to have been taken from [2].IOP Publishing agrees the figures appear identical and has made multiple attempts to contact the author to confirm permission was obtained. As IOP Publishing has received no response and has seen no evidence that permission was granted, IOP Publishing is retracting this article on the basis that copyright has been infringed. If the authors wish to contest this retraction they are advised to contact researchintegrity@ioppublishing.org.[1] Ibrahim T. Ozbolat, Monika Hospodiuk, Current advances and future perspectives in extrusion-based bioprinting, Biomaterials, Volume 76, 2016, Pages 321-343, ISSN 0142-9612, https://doi.org/10.1016/j.biomaterials.2015.10.076[2] Murphy, S., Atala, A. 3D bioprinting of tissues and organs. Nat Biotechnol 32, 773-785 (2014). https://doi.org/10.1038/nbt.2958Retraction published: 08 September 2021