1. Department of Surgery, The School of Medicine, Zonguldak Karaelmas University, Kozlu-Zonguldak, Turkey
2. Department of Pathology, The School of Medicine, Zonguldak Karaelmas University, Kozlu-Zonguldak, Turkey
3. Department of Biochemistry, The School of Medicine, Zonguldak Karaelmas University, Kozlu-Zonguldak, Turkey
4. Department of Biochemistry, The School of Medicine, Gazi University, Besevler-Ankara, Turkey
5. Department of Biostatistics, The School of Medicine, Zonguldak Karaelmas University, Kozlu-Zonguldak, Turkey