1. Faculty of Medicine, University of Belgrade, Belgrade 11000, Serbia
2. Clinic for Endocrinology, Diabetes and Metabolic Diseases, University Clinical Center of Serbia, Belgrade 11000, Serbia
3. Clinic for Neurosurgery, University Clinical Center of Serbia, Belgrade 11000, Serbia
4. Center for Magnetic Resonance Imaging, University Clinical Center of Serbia, Belgrade 11000, Serbia
5. University of Novi Sad, Faculty of Medicine, Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Center of Vojvodina, Novi Sad 21000, Serbia
6. Faculty of Medicine, University of Banja Luka, University Clinical Center of Republic of Srpska, Banja Luka 78101, Bosnia and Herzegovina
7. School of Medicine, University of Montenegro, Podgorica, Montenegro, Department of Endocrinology, Internal Medicine Clinic, Clinical Center of Montenegro, Podgorica 81110, Montenegro
8. Institute of Pathology, Faculty of Medicine, University of Belgrade, Belgrade 11000, Serbia