1. Department of Nephrology and Dialysis, Sestre Milosrdnice University Hospital, Croatia
2. Department of Nephrology and Dialysis, University Hospital Rijeka, Croatia
3. Department of Nuclear Medicine and Radiation, University Hospital Zagreb, Croatia
4. Department of Medicine, Sestre Milosrdnice University Hospital, Croatia
5. Ear, Nose, Throat and Neck Surgery, Sestre Milosrdnice University Hospital, Croatia