GUARDIAN Dr n. med. Wanda Badowska https://www-wssd-olsztyn-pl.translate.goog/oddzial-kliniczny-onkologii-i-hematologii-dzieciecej/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=pl CLINICAL DEPARTMENT OF PEDIATRIC ONCOLOGY AND HEMATOLOGYUniversity of Warmia and Mazury in OlsztynMedical DepartmentDepartment of Clinical PediatricsUl. Żołnierska 18a10-561 Olsztyn