Scientific Reports 5: Article number: 8664; published online: 02 March 2015; updated: 26 August 2015

In the original version of this Article, Wei Wang and Xin Zhang were incorrectly listed as being affiliated with ‘Shanghai University of Traditional Chinese Medicine, Shanghai. 201203, China’ (affiliation 5) and Chunlei Shan was listed as not being affiliated with ‘Shanghai University of Traditional Chinese Medicine, Shanghai. 201203, China.’ These errors have been corrected in the HTML and PDF versions of the Article.