1 School of Medicine University of Zagreb, Zagreb, Croatia.
2 University Hospital Center Zagreb, Department of Internal Medicine, Division of Nephrology, Arterial Hypertension, Dialysis and Transplantation, Zagreb, Croatia.
3 School of Medicine University of Zagreb, Zagreb, Croatia. ivan_padjen@yahoo.ca.
4 University Hospital Center Zagreb, Department of Internal Medicine, Division of Clinical Immunology and Rheumatology, National Referral Centre for Systemic Lupus Erythematosus and Related Disorders, Zagreb, Croatia. ivan_padjen@yahoo.ca.
5 University Hospital Center Zagreb, Department of Cardiovascular Diseases, Zagreb, Croatia.
6 University Hospital Center Zagreb, Department of Internal Medicine, Division of Clinical Immunology and Rheumatology, National Referral Centre for Systemic Lupus Erythematosus and Related Disorders, Zagreb, Croatia.