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Authors
Stępień, Agnieszka https://orcid.org/0000-0003-3905-8229
Jędrzejowska, Maria
Guzek, Katarzyna
Rekowski, Witold
Stępowska, Jolanta
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Funding
Funding for this research was provided by:
Ministerstwo Nauki i Szkolnictwa Wyższego (Research project of the University of Physical Education in Warsaw DS-258)
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Article History
Received: 1 June 2018
Accepted: 19 December 2018
First Online: 7 February 2019
Ethics approval and consent to participate
: This study was approved by Senate Ethics Committee of the University of Physical Education in Warsaw (SKE 01–03/2016).Parents of all participants signed the consent form to participate.
: Not applicable
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
