1. Clinical Department of Nephrology, Transplantology and Internal Medicine, Pomeranian Medical University in Szczecin, Szczecin, Poland
2. Independent Laboratory of Family Physician Education, Pomeranian Medical University in Szczecin, Szczecin, Poland
3. Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, Szczecin, Poland
4. Department of Laboratory Diagnostics and Molecular Medicine, Pomeranian Medical University in Szczecin, Szczecin, Poland