Assessment of the concentration of selected metalloproteinases (MMP-2, MMP-3, MMP-9 and MMP-13) in patients with ulcers as a complication of type 2 diabetes - Kupczyk, Daria; Bilski, Rafał; Studzińska, Renata; Woźniak, Alina (Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii, 2022)