The influence of tumour necrosis factor α inhibitors treatment – etanercept on serum concentration of biomarkers of inflammation and cartilage turnover in psoriatic arthritis patients - Waszczykowski, Michał; Bednarski, Igor; Lesiak, Aleksandra; Waszczykowska, Elżbieta; Narbutt, Joanna; Fabiś, Jarosław (Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii, 2020)