1. Department of Internal Medicine, Diabetology and Nephrology in Zabrze, Faculty of Medical Sciences in Zabrze (41-800), Medical University of Silesia, Katowice, Poland
2. Students’ Scientific Association by the Department of Internal Medicine, Diabetology and Nephrology in Zabrze, Faculty of Medical Sciences in Zabrze (41-800), Medical University of Silesia, Katowice, Poland
3. Department of Physiology in Zabrze, Faculty of Medical Sciences in Zabrze (41-800), Medical University of Silesia, Katowice, Poland
4. Doctoral School, Department of Pediatric Hematology and Oncology in Zabrze, Faculty of Medical Sciences in Zabrze (41-800), Medical University of Silesia, Katowice, Poland
5. Department of Urology, Faculty of Medical Sciences in Zabrze (41-800), Medical University of Silesia, Katowice, Poland
6. Department of Pediatrics, Faculty of Medical Sciences in Katowice (40-752), Medical University of Silesia, Katowice, Poland
7. Department of Biochemistry, Faculty of Medical Sciences in Zabrze (41-800), Medical University of Silesia, Katowice, Poland
8. Department of Nephrology, Hypertension and Internal Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn (10-957), Poland