Fiłon, Joanna
Ustymowicz-Farbiszewska, Jolanta
Krajewska-Kułak, Elżbieta
Funding for this research was provided by:
Uniwersytet Medyczny w Bialymstoku (N/ST/ZB/18/009/3310)
Article History
Received: 30 November 2018
Accepted: 10 March 2020
First Online: 23 March 2020
Ethics approval and consent to participate
: Written informed consent was obtained from all parents or legal guardians of the child.The study was approved by Bioethics Committee of the Medical University of Bialystok, act no: R-I-002/18/2015.
: Not applicable.
: The authors declare that they have no competing interests.