1. Institute of Pathology, Faculty of Medicine, University of Nis, 18000 Nis, Serbia
2. Department of Pathology, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu, Shiga 520-2121, Japan
3. Public Health Institute, Nis, Serbia
4. Institute of Nephrology, Faculty of Medicine, University of Nis, Boulevard Dr Zoran Djindjic 81, 18000 Nis, Serbia