1. Department of Medical Statistics, Epidemiology and Medical Informatics, School of Public Health Andrija Štampar, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
2. Department of Radiology, Polyclinic Croatia, 10000 Zagreb, Croatia
3. Department of Radiology, Medikol Polyclinic, 10000 Zagreb, Croatia
4. Division of Clinical Immunology and Rheumatology, Department of Internal Medicine, University Hospital Centre Zagreb, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
5. Department of Internal Medicine, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
6. General Hospital Varaždin, 42000 Varaždin, Croatia
7. University Hospitals of North Midlands NHS Trust, Royal Stoke University Hospital, Newcastle Rd., Stoke-on-Trent ST4 6QG, UK
8. Faculty of Dental Medicine and Health, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia