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Article History
Received: 17 December 2023
Revised: 26 September 2024
Accepted: 7 October 2024
First Online: 14 November 2024
Competing interests
: The authors declare no competing interests.
: The study protocol was approved by the Ethics Committee of Leipzig University (Reg. No. 477/19-ek).
: Parents gave informed and written consent for their children to take part in the study.
