1. University Children’s Hospital, Tirsova 10, 11000 Belgrade, Serbia
2. Institute for Child and Mother’s Health “Dr Vukan Cupic”, Radoja Dakica 6-8, 11070 Belgrade, Serbia
3. Clinic of Psychiatry, Clinical Centre of Serbia, Pasterova 2, 11000 Belgrade, Serbia
4. School of Medicine, University of Belgrade, Dr Subotica 8, 11000 Belgrade, Serbia
5. Clinic for Gynecology and Obstetrics “Narodni Front”, Kraljice Natalije 62, 11000 Belgrade, Serbia
6. Institute of Endocrinology, Diabetes and Metabolic Diseases, Clinical Centre of Serbia, Dr Subotica 13, 11000 Belgrade, Serbia
7. Clinical Hospital Centre “Zvezdara”, Dimitrija Tucovica 161, 11050 Belgrade, Serbia
8. Faculty of Dental Medicine, University of Belgrade, Rankeova 4, 11000 Belgrade, Serbia