Lora Petrova1, Emil Hristov1, Kalina Andreevska1, Iva Parvova2 1Faculty of Chemistry and Pharmacy, Sofia University "Saint Kliment Ohridski", Bulgaria 2Clinic of Rheumatology, Department of Rheumatology, Medical University - Sofia
Vasko Georgiev, Emil Hristov, Kalina Andreevska, Tzvetomir Delyiski Faculty of Chemistry and Pharmacy, Sofia University "Saint Kliment Ohridski", Bulgaria