1. Ankara Atatürk Training and Research Hospital, Intensive Care Unit, Ankara, Turkey
2. Department of Endocrinology and Metabolism, Hacettepe University Faculty of Medicine, Ankara, Turkey
3. Department of Medical Intensive Care, Gazi University Faculty of Medicine, Ankara, Turkey
4. Department of General Surgery, Division of Nutrition Support, Hacettepe University Faculty of Medicine, Ankara, Turkey
5. Department of Internal Medicine, Medical Intensive Care Unit, Division of Nutrition Support, Hacettepe University Faculty of Medicine, Ankara, Turkey