1. Institute for Rehabilitation, Belgrade, Serbia;
2. Faculty of Medicine, University of Belgrade, Belgrade, Serbia;
3. Belmedic General Hospital, Biochemical Laboratory Department, Belgrade, Serbia;
4. Institute for Medical Statistics and Informatics, Faculty of Medicine, University of Belgrade, Belgrade, Serbia;
5. Physical Medicine and Rehabilitation Department, University Children’s Hospital, Belgrade, Serbia;
6. Medical University Clinic for Endocrinology, Diabetes and Metabolic Diseases, Belgrade, Serbia