Reader Comments

Post a new comment on this article

Publisher's Note: Errors in Corresponding Author Email Address

Posted by PLOS_ONE_Group on 18 Nov 2013 at 22:34 GMT

The email address for Corresponding Author Yi Zhang was incorrectly omitted from the Metadata in the PDF version of the article, and is incorrect as currently indicated in the online version of the article. The correct email address is: yizhang313@163.com.

No competing interests declared.