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Publisher's Note: Error in Equations 2-4

Posted by PLOS_ONE_Group on 28 Sep 2011 at 19:29 GMT

(2)
http://plosone.org/article/info:doi/10.1371/journal.pone.0012340#article1.body1.sec1.p2

Equations 2-4 are missing + and - signs. The correct equations are:

(2)
s.e. (SMR) = SMR0(1 – d/n)1/2/d1/2,

(3)
SMR = SMR0(1 - 1/(2d) +/- Z(1 – d/n)1/2/d1/2),

(4)
SMRL = (D/E)(1 – 1/(9D) – Z/(3D1/2))3,

SMRU = ((D + 1)/E)(1 – 1/(9(D + 1)) + Z/(3(D + 1)1/2))3,

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