1. Faculty of Medicine, Institute of Medical Chemistry, Biochemistry and Clinical Biochemistry, Comenius University, Bratislava, Slovakia.
2. Department of Diabetology and Metabolic Diseases, Metabol Klinik, Lipid Clinic, MED PED Centre, Bratislava, Slovakia.
3. University Hospital—St. Michael's Hospital, Bratislava, Slovakia.
4. National Blood Transfusion Service of Slovak Republic, Bratislava, Slovakia.