Xu, Chao http://orcid.org/0000-0003-0444-7080
Wang, Xiao
Liu, Ke
Roundtree, Ian A
Tempel, Wolfram
Li, Yanjun
Lu, Zhike
He, Chuan
Min, Jinrong
Article History
Received: 27 June 2014
Accepted: 3 September 2014
First Online: 21 September 2014
Change Date: 19 August 2015
Change Type: Corrigendum
Change Date: 11 November 2015
Change Type: Erratum
Change Details: In the version of this Brief Communication initially published, the email address for corresponding author, Chao Xu, was incorrect. It should be listed as chaor.xu@utoronto.edu. This error has been corrected in the PDF and HTML versions of the article.
Change Details: In the version of this Brief Communication initially published, as well as in a corrected version of 19 August 2015, incorrect e-mail addresses were given for corresponding author Chao Xu. The correct address is chaor.xu@utoronto.ca. This error has been corrected in the PDF and HTML versions of the article.
Competing interests
: The authors declare no competing financial interests.