Walladbegi J, Svanberg A, Gellerstedt M. Protocol for a randomised controlled trial to study cryoprevention of chemotherapy-induced oral mucositis after autologous stem cell transplantation. BMJ Open 2018;8:e021993. doi: 10.1136/bmjopen-2018-021993

This article was previously published with an error.

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In Funding information, the grant number for Vinnova was left out. Therefore, the updated Funding statement is:

This work was supported by BrainCool AB, VINNOVA, grant number 2016-04171 and Gothenburg Dental Society, grant number 2017-12-21.

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In Statistical methods under Analyses of the secondary variables section paragraph 4 was appearing twice.

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Figure 1 was incorrect. The correct figure is shown below.