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Additional Information

Competing Interests

Dorothy Bishop is an Academic Editor for PeerJ.

Author Contributions

David Robert Grimes wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Dorothy V Bishop wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Data Deposition

The following information was supplied regarding data availability:

There is no raw data or code. This is a commentary.

Funding

DVMB is supported by a Principal Research Fellowship from the Wellcome Trust, ref 082498/Z/07/Z. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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