Correction to: Spinal Cord advance online publication 21 July 2015; doi:10.1038/sc.2015.19; published online 17 February 2015

Since the publication of this article, the authors have noticed that the project funding number was absent in the acknowledgements. The correct acknowledgements are as follows:

The study was supported by The Scientific and Technological Research Council of Turkey (TUBITAK-108S229).

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