Gawrecki, Andrzej
Michalak, Arkadiusz http://orcid.org/0000-0002-6088-9636
Gałczyński, Szymon
Dachowska, Iwona
Zozulińska-Ziółkiewicz, Dorota
Szadkowska, Agnieszka
Article History
Received: 25 March 2019
Accepted: 21 May 2019
First Online: 4 June 2019
Compliance with ethical standards
:
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
: All procedures involving human participants were in accordance with the ethical standards of the institutional research committee (Ethics Committee of the Medical University of Lodz, consent NO RNN/195/17/KE) and with the 1964 Helsinki declaration and its later amendments.
: Informed consent was obtained from guardians of all individual participants included in the study and participants above 16 years of age. Younger participants gave their verbal assent.