1. Department of Clinical Immunology, Pulmonology and Rheumatology; University Hospital Centre “Sestre Milosrdnice”; Zagreb Croatia
2. Department of Gastroenterology; University Hospital Centre “Sestre Milosrdnice”; Zagreb Croatia
3. Hospital for Lung Diseases and Tuberculosis “Klenovnik”; Klenovnik Croatia
4. Department of Cardiology; “Čakovec” County Hospital; Čakovec Croatia
5. Department of Cardiology; University Hospital “Thalassotherapia Opatija”; Opatija Croatia
6. Department of Internal Medicine, Medical Faculty; University of Rijeka; Rijeka Croatia
7. Department of Internal Medicine; Medical Faculty “J.J. Strossmayer”, University of Osijek; Croatia