1. University Clinical Center of Serbia, Division for Endocrinology, Diabetes, and Diseases of Metabolism, Belgrade, Serbia + University Business Academy in Novi Sad, Faculty of Pharmacy, Novi Sad, Serbia
2. University of Belgrade, Faculty of Medicine, Institute of Social Medicine, Belgrade, Serbia
3. University Clinical Center of Serbia, Clinic for Emergency Surgery, Emergency Center, Belgrade, Serbia + University of Belgrade, Faculty of Medicine, Belgrade, Serbia
4. University of Belgrade, Faculty of Medicine, Belgrade, Serbia + University Clinical Center of Serbia, Division of Cardiology, Belgrade, Serbia
5. University of Belgrade, Faculty of Medicine, Institute for Medical Statistic and Informatics, Serbia
6. University Clinical Center of Serbia, Division for Ophthalmology, Belgrade, Serbia
7. University of Belgrade, Faculty of Medicine, Belgrade, Serbia + University Clinical Center of Serbia, Center for Radiology and Magnetic Resonance, Belgrade, Serbia
8. University of Belgrade, Faculty of Medicine, Belgrade, Serbia + University Clinical Center of Serbia, Clinic for Digestive Surgery, Department for Minimally Invasive Upper Digestive Surgery, Belgrade, Serbia