Scientific Reports 7:2340; doi:10.1038/s41598-017-02521-6; Article published online 24 May 2017.

In the original version of this Article, Jin Woo Chang was incorrectly listed as being affiliated with ‘School of Interdisciplinary Bioscience and Bioengineering, POSTECH, Pohang, Korea’.

The correct affiliation is listed below:

Department of Neurosurgery, Yonsei University College of Medicine, Seoul, South Korea.

This error has now been corrected in the HTML and PDF versions of the Article.