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Publisher's Note: Table 1 formatting off.

Posted by PLOS_ONE_Group on 01 Jun 2012 at 18:19 GMT

It is
http://plosone.org/article/info:doi/10.1371/journal.pone.0037157#article1.body1.sec1.p1

A minor distortion was found in Table 1. The data in The columns 2, 3, 4 and 6 were shifted down one line beginning in row 14. A reformatted table can be seen here:

http://www.plosone.org/corrections/pone.0037157.t001.cn.tif

No competing interests declared.