Dudnyk, V. M., A. P. Fedchushen, and K. V. Khromykh. “Cellular and Humoral Immunity in Children With Asthma”. Journal of Education, Health and Sport, vol. 7, no. 2, Feb. 2017, pp. 296-04, https://apcz.umk.pl/JEHS/article/view/4305.