Andrzejewska, Malgorzata
Hap, Katarzyna
Biernat, Karolina
Sutkowska, Edyta
Demczyszak, Iwona
Marciniak, Dominik
Kuciel, Natalia
Article History
Received: 14 May 2021
Accepted: 8 December 2021
First Online: 18 December 2021
Declarations
:
: Approval for the study was obtained from the Bioethics Committee of the Medical University of Wroclaw (consent number KB-108/2019). Our retrospective study was conducted according to the Declaration of Helsinki; anonymity was maintained the Bioethics Committee of the Medical University of Wroclaw (consent number KB-108/2019). Parental consent was obtained in each case.
: Not applicable
: The authors declare that they have no competing interests