1. Clinical Biochemistry, Çiğli State Hospital, İzmir, Turkey
2. Tissue Typing Laboratories, Health Sciences University, Tepecik Training and Research Hospital, İzmir, Turkey
3. Department of Gastroenterology, Katip Çelebi University, Atatürk Training and Research Hospital, 35360 İzmir, Turkey
4. Department of Gastroenterology, Tınaztepe University, School of Medicine, İzmir, Turkey