Scientific Reports 2, Article number: 0529 (2012); Published: 24 July 2012; Updated: 22 November 2013

The details for affiliation 1 were incorrect in the original HTML version of this Article. The affiliation was incorrectly listed as “Department of Neurology, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan”. The correct affiliation is listed above. This has now been corrected in the HTML version of the Article.