Szymczyk, A., Szydełko, M., Szydełko, J., Jaworski, J., Onyshchuk, Y., Dziedzic, R., Hus, M. and Podhorecka, M. 2019. The diagnostic difficulties of eosinophilia in clinical practice - case series. Journal of Education, Health and Sport. 9, 3 (Apr. 2019), 385–397.