Drab, Marcin, Agnieszka Szymczyk, Waldemar Tomczak, Elżbieta Drab-Urbanek, Katarzyna Łapacz, Marek Hus, and Monika Podhorecka. 2018. “Chest Pain in the Course of Multiple Myeloma - a Clinical Case Study”. Journal of Education, Health and Sport 8 (7):11-18. https://apcz.umk.pl/JEHS/article/view/5537.