1. Faculty of Medicine, Pediatric Psychology and Psychosomatic Unit of the Department of Pediatrics, University of Debrecen, Debrecen, Hungary
2. Faculty of Medicine, Department of Behavioural Sciences, University of Debrecen, Debrecen, Hungary
3. Faculty of Medicine, Pediatric Psychology and Psychosomatic Unit of the Department of Pediatrics, Kálmán Laki Doctoral School, University of Debrecen 98. Nagyerdei Boulevard, Debrecen, Hungary