The original version of this article, unfortunately, contained a mistake. In the section “Compliance with Ethical Standards” of the initial publication, it is written: “Ethics approval: The study was conducted following the ethical principles of the Finnish Advisory Board on Research Integrity and the ethical principles of the Helsinki Declaration and approved by the University of Bremen and the German Research Foundation.”
This has been corrected and the sentence now reads: “Ethics approval: The study was conducted following the ethical principles of the Finnish Advisory Board on Research Integrity, the German Research Foundation, and the ethical principles of the Helsinki Declaration and was approved by the University of Bremen.”
The authors regret the error. The original article has been corrected.
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