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Authors
Szczepanowska-Wolowiec, Beata
Sztandera, Paulina
Kotela, Ireneusz
Zak, Marek http://orcid.org/0000-0003-0881-9232
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Funding
Funding for this research was provided by:
Ministerstwo Nauki i Szkolnictwa Wyższego (Project No 024/RID/2018/19)
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Article History
Received: 14 August 2019
Accepted: 30 October 2019
First Online: 13 November 2019
Ethics approval and consent to participate
: The University’s Bioethics Review Committee ruled that no formal ethics approval was required under presently applicable national legislation. The parents/guardians of the study participants, having been furnished with detailed information on the aims and methods to be used throughout the study protocol, formally consented in writing to the participation of their children/charges.
: Not applicable.
: The authors declare that they have no competing interests.
