1. Tekirdağ University, Department of General Surgery, Tekirdağ, Turkey
2. KIRIKKALE ÜNİVERSİTESİ, TIP FAKÜLTESİ
3. Yeni yüzyıl University Gaziosmanpaşa hospital, Department of General Surgery, İstanbul, Turkey
4. Bolu Abant İzzet Baysal University Faculty of Medicine Training and Research Hospital, Department of Internal Medicine, Bolu, Turkey