1. Departments of Internal Medicine, GATA Haydarpasa Training Hospital, Istanbul, Tiirkiye.
2. Departments of Gastroenterology, GATA Haydarpasa Training Hospital, Istanbul, Tiirkiye.
3. Departments of Thoracic Surgery, Cerrahpasa Medical Faculty, Istanbul, Tiirkiye.
4. Departments of Rheumatology, Cerrahpasa Medical Faculty, Istanbul, Tiirkiye.