1. University of Health Sciences Turkey, Haseki Health Training and Research Hospital, Department of Internal Medicine, Istanbul, Turkey
2. Medicana Hospital Bahçelievler, Internal Medicine Clinic, Istanbul, Turkey
3. Demiroğlu Bilim University Department of Gastroenterology, Istanbul, Turkey
4. Istanbul Taksim Training and Research Hospital, Internal Medicine Clinic, Istanbul, Turkey
5. Istinye University Department of Gastroenterology, Istanbul, Turkey