1. Department of Rheumatology, Systemic Connective Tissue Diseases and Rare Diseases, Central Clinical Hospital MSWiA in Warsaw, Warsaw, Poland
2. Department of Geriatrics, Internal Medicine and Metabolic Bone Diseases, Centre of Postgraduate Medical Education, Warsaw, Poland
3. School of Public Health, Centre of Postgraduate Medical Education, Warsaw, Poland
4. UHE Satellite Campus in Warsaw, University of Humanities and Economics in Łódź, Warsaw, Poland