1. University of Health Sciences, İzmir Tepecik Training and Research Hospital, Clinic of Pediatric Gastroenterology, İzmir, Turkey
2. İzmir Katip Çelebi University Faculty of Medicine, Department of Child and Adolescent Psychiatry; University of Health Sciences, Tepecik Training and Research Hospital, Clinic of Child and Adolescent Psychiatry İzmir, Turkey
3. Ege University Faculty of Medicine, Department of Pediatric Gastroenterology, İzmir, Turkey
4. İzmir Katip Çelebi University Faculty of Medicine, Department of Pediatric Gastroenterology, İzmir, Turkey