Complications from the cardiovascular system in children who have had COVID-19 T.A. Bobomuratov, N.A. Karimova, A.K. Tursunbayev and N.F. Nurmatova E3S Web of Conf., 381 (2023) 01092 Published online: 14 April 2023 DOI: 10.1051/e3sconf/202338101092