1. Department of Pulmonary Medicine, Gazi University Faculty of Medicine, Ankara, Turkey
2. Department of Anesthesiology and Reanimation, Gazi University Faculty of Medicine, Ankara, Turkey
3. Intensive Care Unite, Department of Internal Medicine, Gazi University Faculty of Medicine, Ankara, Turkey
4. Department of Pathology, Gazi University Faculty of Medicine, Ankara, Turkey
5. Department of Hematology, Gazi University Faculty of Medicine, Ankara, Turkey