Szymczyk, A., M. Szydełko, J. Szydełko, J. Jaworski, Y. Onyshchuk, R. Dziedzic, M. Hus, and M. Podhorecka. “The Diagnostic Difficulties of Eosinophilia in Clinical Practice - Case Series”. Journal of Education, Health and Sport, vol. 9, no. 3, Apr. 2019, pp. 385-97, https://apcz.umk.pl/JEHS/article/view/6718.