Funding for this research was provided by:
Received: 20 January 2020
Accepted: 24 March 2020
First Online: 3 April 2020
Ethics approval and consent to participate
: This study was approved by the ethics committee of Medical University of Lublin, Poland (committee’s reference number: KE-0254/178/2002). Written, informed consent to participate was obtained from the patient’s parents.
: Written, informed consent to publish was obtained from the patient’s parents.
: The authors declare that they have no competing interests.