1. Department of Nephrology, Transplantology and Internal Medicine, Medical University of Gdańsk, Gdańsk, Poland;
2. Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Gdańsk, Poland;
3. Department of Pharmaceutical Biochemistry, Medical University of Gdańsk, Gdańsk, Poland;
4. Department of Clinical Nutrition, Medical University of Gdańsk, Gdańsk, Poland