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Supplemental Information

Supporting information on data sources and analyses

DOI: 10.7287/peerj.preprints.213v2/supp-1

Additional Information

Competing Interests

There are no competing interests.

Author Contributions

Daniel Nettle conceived and designed the experiments, performed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Human Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

This paper reports only secondary analysis of existing anonymous data.

Funding

This research was internally funded by the Faculty of Medical Sciences, Newcastle University. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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