K B Sreter1, V Degoricija2,3, M Trbušic2,4. 1. Department of Clinical Immunology, Pulmonology and Rheumatology, University Hospital Centre "Sestre Milosrdnice", Zagreb, Croatia. 2. University of Zagreb School of Medicine, Zagreb, Croatia. 3. Department of Internal Medicine, University Hospital Centre "Sestre Milosrdnice", Zagreb, Croatia. 4. Department of Cardiology, University Hospital Centre "Sestre Milosrdnice", Zagreb, Croatia.