Wolan-Nieroda, Andżelina http://orcid.org/0000-0002-0188-4755
Maciejczak, Andrzej
Guzik, Agnieszka http://orcid.org/0000-0002-4582-4383
Przysada, Grzegorz http://orcid.org/0000-0002-2356-0997
Szeliga, Ewa
Drużbicki, Mariusz http://orcid.org/0000-0003-4511-8419
Article History
Received: 3 September 2018
Accepted: 27 March 2019
First Online: 15 April 2019
Ethics approval and consent to participate
: The study was reviewed and approved by the Bioethics Commission of the Medical Faculty at University of Rzeszow. Written informed consent was obtained from all the parents after being informed of the study objectives.
: 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.