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. 2010 Nov 5;5(11):e13849. doi: 10.1371/journal.pone.0013849

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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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The X axis displays the dosage groups along with all of the placebos, who were combined into one group. The Y axis displays the PIRs that were assessed in the study. The data displayed in the matrix represents the number of individuals who reported a given PIR and the size of the circle is proportional to the reported number. The top half of the graph consists of systemic PIRs while the bottom half of the graph consists of local PIRs.