In this Article, several graphs in Fig. 2 have an incorrect label underneath the last data point; ‘E14’ in Fig. 2b–d should have been ‘P14’. The correct version of Fig. 2 appears below. In addition, we omitted to properly cite the related paper by Thiede et al. in the Discussion section, whose details are as follows:
Thiede, B. R. et al. Retinoic acid signalling regulates the development of tonotopically patterned hair cells in the chicken cochlea. Nat. Commun. 5, 3840 (2014).

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The online version of the original article can be found at 10.1038/ncomms4839
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Mann, Z., Thiede, B., Chang, W. et al. Correction: Corrigendum: A gradient of Bmp7 specifies the tonotopic axis in the developing inner ear. Nat Commun 5, 4591 (2014). https://doi.org/10.1038/ncomms5591
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DOI: https://doi.org/10.1038/ncomms5591