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Authors
Mulders, Miriam https://orcid.org/0000-0003-0683-2310
Träg, Kristian H. https://orcid.org/0009-0004-4557-2026
Kirner, Lara https://orcid.org/0009-0000-1298-8640
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Funding
Funding for this research was provided by:
Universität Duisburg-Essen
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Article History
Received: 20 July 2023
Accepted: 2 December 2024
First Online: 4 January 2025
Declarations
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: There is no conflict of interest. The evaluation study was commissioned by greenpeace, but then conducted and analyzed independently by scientists of the University of Duisburg-Essen. Greenpeace covered the costs of one student assistant for the duration of the evaluation.
