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Publisher's Note: Correction to Acknowledgements

Posted by PLOS_ONE_Group on 04 May 2009 at 19:19 GMT

We are grateful to the Ministry of Environments of Thailand Government for permitting us to undertake this research.
http://plosone.org/article/info:doi/10.1371/journal.pone.0004768#article1.back1.ack1.p1

This statement is incorrect and should be omitted.

No competing interests declared.