1. Department of General Surgery, Buyukcekmece Mimar Sinan State Hospital, Istanbul, Turkey

2. Department of General Surgery, University of Health Sciences, Bakirkoy Dr. Sadi Konuk Training and Research Hospital, Istanbul, Turkey

3. Department of Endocrinology and Metabolism, University of Health Sciences, Bakirkoy Dr. Sadi Konuk Training and Research Hospital, Istanbul, Turkey

4. Department of Interventional Radiology, University of Health Sciences, Bakirkoy Dr. Sadi Konuk Training and Research Hospital, Istanbul, Turkey

5. Department of General Surgery, İ.A.Ü. VM Medical Park Florya Hospital, Istanbul, Turkey