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Additional Information

Competing Interests

I have no competing interests.

Author Contributions

Egon Willighagen 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

The research leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7/2007–2013) under Grant Agreement n° [267042], from Cosmetics Europe, and from the Innovative Medicines Initiative Joint Undertaking under grant agreement no. 115191, resources of which are composed of financial contribution from the European Union's Seventh Framework Programme (FP7/2007-2013) and EFPIA companies’ in-kind contribution. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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