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Authors
Chlebna-Sokół, Danuta
Konstantynowicz, Jerzy
Abramowicz, Paweł
Kulik-Rechberger, Beata
Niedziela, Marek
Obuchowicz, Anna
Ziora, Katarzyna
Karalus-Gach, Jolanta
Golec, Joanna
Michałus, Izabela
Karczmarewicz, Elżbieta
Halaba, Zenon Piotr
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Funding
Funding for this research was provided by:
the National Council of Scientific Research (Grant no. NN 407 27 37 39)
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Article History
Received: 26 May 2017
Accepted: 20 June 2018
First Online: 23 June 2018
Compliance with ethical standards
:
: Children were considered eligible for the study when parental or the legal guardian’s written informed consent was obtained. The Bioethics Committee for Research Studies at the Medical University in Łódź approved the study (Certificate no. RNN/7/10/KE dated 12.01.2010).
: On behalf of all authors, the corresponding author states that there is no conflict of interest.
