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. 2010 Dec 30;5(12):e14456. doi: 10.1371/journal.pone.0014456

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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.

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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Numbers are based on the “any” overlap criterion. All data on sex chromosomes have been omitted. Gains are compared only to gains or both, and losses are compared only to losses or both.