1. Ege University Faculty of Medicine, Department of Pediatric Gastroenterology, İzmir, Turkey
2. Universityof Health Sciences, İzmir Tepecik Training and Research Hospital, Clinic of Pediatric Gastroenterology, İzmir, Turkey
3. University of Health Sciences, İzmir Dr. Behçet Uz Children Diseases and Surgery Training and Research Hospital, Clinic of Pediatric Gastroenterology, İzmir, Turkey
4. Ege University Faculty of Medicine, Department of Pathology, İzmir, Turkey