1. Department of Gastroenterology, Istanbul Goztepe Education and Research Hospital, Istanbul, Turkey.
2. Department of Gastroenterology, Haydarpasa Education and Research Hospital, Istanbul, Turkey.
3. Department of Molecular Medicine, Institute of Experimental Medicine (DETAE), Istanbul University, Istanbul, Turkey.
4. Department of Pathology, Istanbul Goztepe Education and Research Hospital, Istanbul, Turkey.