1. Department of General Surgery, School of Medicine, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey.
2. School of Medicine, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey.
3. Department of General Surgery, Bakirkoy Dr. Sadi Konuk Education and Research Hospital, Istanbul, Turkey.
4. Department of General Surgery, School of Medicine, Ankara University, Ankara, Turkey.