Hetman, Marcin, Marcin Kulczyński, Wanda Dobryniewska, Dominik Grzebyk, Natalia Fornal, Ewelina Bracik, and Tomasz Chromiec. 2018. “Hematologic Manifestations of Theumatic Diseases”. Journal of Education, Health and Sport 8 (9):1197-1206. https://apcz.umk.pl/JEHS/article/view/6041.