Faculty of Medical Sciences, Department of Pharmacy, University of Kragujevac, Kragujevac, Serbia. Faculty of Medical Sciences, Department of Physiology, University of Kragujevac, Svetozara Markovica 69, 34000, Kragujevac, Serbia. drvladakgbg@yahoo.com. Department of Human Pathology, 1st Moscow State Medical, University IM Sechenov, Moscow, Russia. drvladakgbg@yahoo.com. Faculty of Medical Sciences, Department of Internal Medicine, University of Kragujevac, Kragujevac, Serbia. Pharmanova, Belgrade, Serbia. Faculty of Medical Sciences, Department of Physiology, University of Kragujevac, Svetozara Markovica 69, 34000, Kragujevac, Serbia. Faculty of Medical Sciences, Department of Medical Statistics and Informatics, University of Kragujevac, Kragujevac, Serbia. Department of Human Pathology, 1st Moscow State Medical, University IM Sechenov, Moscow, Russia.