1. Clinical Department of Rheumatology and Connective Tissue Diseases, University Hospital No 2 Dr. Jan Biziel, Collegium Medicum in Bydgoszcz Nicolaus Copernicus University in Torun, Bydgoszcz, Poland
2. NZOZ Nasz Lekarz, Torun, Poland
3. Division of Rheumatology, Department of Internal Medicine and Gerontology, Jagiellonian University, College of Medicine, Cracow, Poland
4. Department of Diagnostic Hematology, Institute of Hematology and Transfusion Medicine, Warsaw, Poland
5. Faculty of Life Sciences, Collegium Medicum, UMK in Bydgoszcz, Collegium Medicum in Bydgoszcz Nicolaus Copernicus University in Torun, Bydgoszcz, Poland