1. Department of Cardiology, Haseki Training and Research Hospital, Istanbul, Turkey
2. Meram Faculty of Medicine, Department of Cardiology, Necmettin Erbakan University, Konya, Turkey
3. Department of Cardiology, Istanbul Training and Research Hospital, Istanbul, Turkey
4. Department of Gastroenterology, Medicine Hospital, Istanbul, Turkey
5. Department of Gastroenterology, Acıbadem University Faculty of Medicine, Kocaeli Hospital, Kocaeli, Turkey
6. İstanbul Faculty of Medicine, Department of Gastroenterology, Istanbul University, Istanbul, Turkey