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Publisher's Note: error correction

Posted by syj1209 on 06 Apr 2012 at 04:56 GMT

X(s), Y(s), and Z(s) are the Laplace transform of x(t), y(t), and z(t), respectively.
http://plosone.org/article/info:doi/10.1371/journal.pone.0022852#article1.body1.sec2.sec3.p1

For the equations from 8 to 12, Y(s) and Z(s) are 1/(s+py) and 1/(s+pz) and not the Laplace transform of y(t) and z(t).

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