1. Surgical Oncology Clinic, Malatya Training and Research Hospital, Malatya 44330, Turkey
2. General Surgery Department, Üsküdar State Hospital, Istanbul 34662, Turkey
3. General Surgery Department, Osmaneli Mustafa Selahattin Çetintaş State Hospital, Bilecik 11500, Turkey
4. General Surgery Department, Haydarpasa Numune Training and Research Hospital, Istanbul 34668, Turkey