Correction to: Bone Research (2015) 3, 15032. doi:10.1038/boneres.2015.32

Since the online publication of the above article, it was noticed that the symbol indicating the statistical significance was missed in Figure 4a. The correct figure is shown here. The corrected article appears online together with this corrigendum.

Figure 4
figure 1

The journal staff would like to apologise for this error.