Fatih Ozcelik1, Omer Yiginer2, Alpaslan Özgün3. 1. Department of Biochemistry, GATA Haydarpasa Training Hospital, Istanbul, Turkey. 2. Department of Cardiology, GATA Haydarpasa Training Hospital, Istanbul, Turkey. 3. Department of Oncology, GATA Haydarpasa Training Hospital, Istanbul, Turkey.