Liamtseva, O. “CLINICAL AND LABORATORY CHARACTERISTICS OF POST-COVID SYNDROME IN CHILDREN AGED 5–12 YEARS IN RELATION TO IGG LEVELS TO SARS-COV-2”. Eastern Ukrainian Medical Journal, Vol. 13, no. 4, Dec. 2025, pp. 1099-12, doi:10.21272/eumj.2025;13(4);1099-1112.