1. Srebrnjak Children’s Hospital, Zagreb, Croatia
2. Faculty of Medicine, J.J. Strossmayer University of Osijek, Osijek, Croatia
3. Department of Biology, Faculty of Science, University of Zagreb, Zagreb, Croatia
4. Faculty of Dental Medicine and Health Osijek, Osijek, Croatia
5. Hotel and tourism management high school, Zagreb, Croatia
6. Catholic University of Croatia, Zagreb, Croatia