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Additional Information

Competing Interests

Marcio R Pie is an Academic Editor for PeerJ.

Author Contributions

Marcio R Pie conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Funding

This study was partially funded by a research grant from CNPq (304897/2012–4). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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