Koval, Yu. N., and J. A. Novikova. “State of the Dental System in Children With Chronic Generalized Catarrhal Gingivitis, Who Suffer from Chronic Tonsillitis”. Journal of Education, Health and Sport 6, no. 11 (November 30, 2016): 858–869. Accessed April 23, 2024. https://apcz.umk.pl/JEHS/article/view/4488.