Reader Comments

Post a new comment on this article

Publisher’s Note: Error in Author Affiliation

Posted by PLOS_ONE_Group on 12 May 2014 at 20:56 GMT

In the PDF version of this article, Yumin Guo’s affiliation is duplicated. Yumin Guo is listed also twice in the About the Authors section of the online version of the article. The publisher apologizes for these errors.

No competing interests declared.