1. University Children’s Hospital, Belgrade, Serbia + University of Belgrade, Faculty of Medicine, Belgrade, Serbia
2. Singidunum University, Faculty of Health, Legal and Business Studies, Valjevo, Serbia
3. University of Belgrade, Faculty of Medicine, Belgrade, Serbia
4. University Clinical Center of the Republic of Srpska, Banja Luka, Republic of Srpska, Bosnia and Herzegovina + University of Banja Luka, Faculty of Medicine, Banja Luka, Republic of Srpska, Bosnia and Herzegovina
5. Serbian Medical Society, Academy of Medical Sciences of the Serbian Medical Society, Belgrade, Serbia