1. Institute of Medical Physiology “Richard Burian”, Belgrade University Faculty of Medicine, 11000 Belgrade, Serbia
2. Institute of Pathophysiology “Ljubodrag Buba Mihailovic”, Belgrade University Faculty of Medicine, 11000 Belgrade, Serbia
3. Institute of Histology and Embryology “Aleksandar Đ. Kostić”, Belgrade University Faculty of Medicine, 11000 Belgrade, Serbia
4. Institute of Clinical and Medical Biochemistry, Belgrade University Faculty of Medicine, 11000 Belgrade, Serbia
5. Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN 55902, USA
6. Clinic of Endocrinology, Diabetes and Metabolic Disease, University Clinical Centre of Serbia, Belgrade University Faculty of Medicine, 11000 Belgrade, Serbia