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Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Nicholas J L Brown 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.

James A J Heathers 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.

Data Deposition

The following information was supplied regarding data availability:

The research in this article did not generate any raw data "stricto sensu". We have a list of the 260 articles that we checked, but we feel that it might not be helpful to make this list available at this time. In any case, our article describes the steps necessary to reproduce this list of articles using a PsycINFO search.

Funding

The authors received no funding for this work.


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