1. Department of Hematology, Erzurum Region Training and Research Hospital, 25770 Erzurum, Turkey
2. Department of Hematology, Van Training and Research Hospital, 65000 Van, Turkey
3. Department of Pathology, 19 Mayıs University Medical School, 55200 Samsun, Turkey
4. Department of Gastroenterology, 19 Mayıs University Medical School, 55200 Samsun, Turkey
5. Department of Hematology, 19 Mayıs University Medical School, 55200 Samsun, Turkey