Xanthine Oxidase/Dehydrogenase Activity as a Source of Oxidative Stress in Prostate Cancer Tissue oleh Andrej Veljković, Jovan Hadži-Dokić, Dušan Sokolović, Dragoslav Bašić, Ljubinka Veličković-Janković, Marko Stojanović, Dejan Popović, Gordana Kocić