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. 2013 Jul 30;8(7):e69709. doi: 10.1371/journal.pone.0069709

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This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration, which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

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The data were taken from previous studies on Phocoenoides dalli (P dal [2,3]), Stenella coeruleoalba (S coe [1]), and Globicephala macrorhynchus (G mac [1]).