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Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Angelo A Salatino conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, performed the computation work, reviewed drafts of the paper.

Francesco Osborne conceived and designed the experiments, analyzed the data, wrote the paper, reviewed drafts of the paper.

Enrico Motta wrote the paper, reviewed drafts of the paper.

Data Deposition

The following information was supplied regarding data availability:

http://technologies.kmi.open.ac.uk/rexplore/peerj2016/

Funding

PhD studentship for Angelo A Salatino is funded by Springer. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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