Tan et al.
Karatay and Gül Utku
Qian et al.
Arslan et al.
Gökbulut et al.
Sharifi et al.
Khamaysi and Taha
Yıldız and Sivri
Kiremitci et al.
Kabaçam et al.
Ankara Unıversıty Medical School, Departments of Gastroenterology, Pathology and General Surgery, Ankara-TURKEY.