Osemlak, Paweł http://orcid.org/0000-0003-0929-9187
Miszczuk, Konrad
Jędrzejewski, Grzegorz
Nachulewicz, Paweł
Beń-Skowronek, Iwona
Brzozowska, Agnieszka
Article History
Received: 16 June 2020
Accepted: 6 January 2021
First Online: 18 February 2021
Competing interests
: The authors declare no competing interests.
: Informed consent for the research was obtained from parents or legal guardians of boys and also from patients over 16 years of age due to the legal regulations in Poland.