1. Special Hospital Radiochirurgia Zageb, 10000 Zagreb, Croatia
2. Department of Diagnostic and Interventional Radiology, University Hospital Dubrava, 10000 Zagreb, Croatia
3. Department of Laboratory Diagnostics, University Hospital Dubrava, 10000 Zagreb, Croatia
4. Department of Internal Medicine, Division of Pulmonology, University Hospital Dubrava, 10000 Zagreb, Croatia
5. Department of Anesthesiology and ICU, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
6. Polyclinic for Respiratory Tract Diseases, 10000 Zagreb, Croatia
7. Department of Ultrasound and Nuclear Medicine, University Hospital Dubrava, 10000 Zagreb, Croatia