@Article{Riga2021,
journal="Pediatria Polska - Polish Journal of Paediatrics",
issn="0031-3939",
volume="96",
number="4",
year="2021",
title="Severe and critical COVID-19 in children: a simple single-center, cross-sectional study",
author="Riga, Olena
and Korsunov, Vladimyr
and Penkov, Andriy
and Michaylova, Olexandra
and Urivaeva, Marina
and Ischchenko, Tetyana
and Georgiyants, Marine",
pages="231--237",
doi="10.5114/polp.2021.112396",
url="http://dx.doi.org/10.5114/polp.2021.112396"
}