1. Academy for Applied Studies Belgrade Department of Higher Medical School Belgrade Serbia
2. Faculty of Medicine University of Novi Sad Novi Sad Serbia
3. Department of Endocrinology Mother and Child Health Care Institute of Serbia "Dr. Vukan Cupic" Belgrade Serbia
4. Health Center Novi Sad Novi Sad Serbia
5. University Children's Hospital Belgrade Belgrade Serbia
6. Faculty of Medicine University of Belgrade Belgrade Serbia
7. Specialized Hospital "Bukovicka banja" Arandjelovac Arandjelovac Serbia
8. Faculty of Medicine Department of Nursing University of Novi Sad Novi Sad Serbia