1. Institute for Rheumatology, Belgrade, Serbia
2. Clinical Centre of Serbia, Center for Medical Biochemistry, Belgrade, Serbia
3. Clinical Centre of Serbia, Clinic for Cardiology, Belgrade, Serbia + University of Belgrade, Faculty of Medicine, Belgrade, Serbia
4. University of Belgrade, Faculty of Medicine, Belgrade, Serbia + Clinical Centre of Serbia, Clinic for Endocrinology, Diabetes and Metabolic Diseases, Belgrade, Serbia